Top 10 Best Dual Audio Output Software of 2026

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Top 10 Best Dual Audio Output Software of 2026

Top 10 ranking of dual audio output software for streaming, gaming, and meetings, with tools like SoundWire and NVIDIA Broadcast.

33 min readUpdated AI-verified · Expert reviewed
How we ranked these tools
01Feature Verification

Core product claims cross-referenced against official documentation, changelogs, and independent technical reviews.

02Multimedia Review Aggregation

Analyzed video reviews and hundreds of written evaluations to capture real-world user experiences with each tool.

03Synthetic User Modeling

AI persona simulations modeled how different user types would experience each tool across common use cases and workflows.

04Human Editorial Review

Final rankings reviewed and approved by our editorial team with authority to override AI-generated scores based on domain expertise.

Read our full methodology →

Score: Features 40% · Ease 30% · Value 30%

Gitnux may earn a commission through links on this page — this does not influence rankings. Editorial policy

Dual audio output software matters when the same playback source must reach multiple endpoints with consistent latency, per-application routing, and stable device mapping. This ranked list is built for analysts and technical operators who need verifiable differences in configuration, audio path control, and reliability across platforms, with special attention to SoundWire, SteelSeries Sonar, and NVIDIA Broadcast as reference points.

SoundWire is the go-to pick if you need system audio duplicated and streamed to a mobile device with controlled latency, whereas SteelSeries Sonar fits teams streaming with voice chat that must stay separately routable across two endpoints on the same machine.

Editor’s top 3 picks

Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.

Editor pick
1

SoundWire

Native remote audio streaming setup that keeps one captured feed synchronized to one or more output endpoints.

Built for fits when system audio must be duplicated and streamed with controlled latency and minimal ongoing tuning..

2

SteelSeries Sonar

Editor pick

Sonar’s integrated voice processing and per-source controls inside its virtual mixer for mic and system audio.

Built for fits when streaming and voice chat need independent control across two audio endpoints..

3

NVIDIA Broadcast

Editor pick

AI-based noise removal and room echo cancellation applied before audio leaves the NVIDIA virtual endpoint.

Built for fits when dual output depends on AI mic effects with predictable virtual endpoints on one Windows machine..

Comparison Table

1
SoundWireBest overall
specialist
9.5/10
Overall
2
9.3/10
Overall
3
9.0/10
Overall
4
API-first
8.7/10
Overall
5
vertical specialist
8.4/10
Overall
6
8.1/10
Overall
7
vertical specialist
7.8/10
Overall
8
7.5/10
Overall
9
vertical specialist
7.2/10
Overall
10
vertical specialist
6.9/10
Overall
#1

SoundWire

specialist

Audio transmission app that sends audio from a PC to mobile devices over WiFi for dual output setups.

9.5/10
Overall
Features9.4/10
Ease of Use9.6/10
Value9.6/10
Standout feature

Native remote audio streaming setup that keeps one captured feed synchronized to one or more output endpoints.

SoundWire is designed around virtual capture and playback endpoints so one source can be duplicated to another output path without needing per-application audio session rules. Configuration centers on selecting the capture source, defining the target output, and tuning audio parameters such as sample format and buffering for latency tradeoffs. Routing behavior stays consistent because it does not rely on application hooks for common audio paths. That makes it a fit for multi-room playback, live capture relays, and remote audio monitoring where system audio routing changes are frequent.

A tradeoff appears in channel-level control. SoundWire does not present the same kind of fine-grained mixer matrix features as dedicated multi-output audio mixers, so workflows that depend on explicit left-right channel mapping and per-output EQ usually need extra tools. It is a strong usage fit when one stable audio feed must be broadcast with acceptable latency and minimal user interaction during playback.

Pros
  • +Predictable multi-output routing from one capture source
  • +Configurable buffering and audio parameters for latency control
  • +Reliable remote audio streaming between machines
  • +Low-interaction setup for repeated dual-output runs
Cons
  • –Limited mixer-grade controls for channel splitting and mapping
  • –No granular per-application routing rules for mixed workflows
Use scenarios
  • Live stream audio teams

    Send monitor mix to remote workstation

    Consistent remote monitoring

  • Home studio operators

    Play one input on two computers

    Single source, dual playback

Show 1 more scenario
  • Support engineers

    Relay system audio for diagnostics

    Faster troubleshooting feedback

    SoundWire streams system audio to a second machine for real-time issue reproduction.

Best for: Fits when system audio must be duplicated and streamed with controlled latency and minimal ongoing tuning.

#2

SteelSeries Sonar

SMB

Audio mixing software that routes game, chat, and media audio to separate output devices simultaneously.

9.3/10
Overall
Features9.5/10
Ease of Use9.0/10
Value9.2/10
Standout feature

Sonar’s integrated voice processing and per-source controls inside its virtual mixer for mic and system audio.

Sonar provides a software mixer that routes microphone and system audio into Sonar processing and then out through Sonar virtual devices, which simplifies dual-device audio routing for headsets plus capture devices. Built-in blocks for voice processing and audio cleanup reduce the need to stack third-party filters before sending audio to a second endpoint. Its per-application routing helps keep browser tabs and launchers from sharing the same output path as the game audio. This design fits setups that need consistent routing each time an app restarts.

A key tradeoff is that Sonar’s routing model is strongest inside the Sonar virtual device workflow, so advanced chaining into custom pro audio topologies can require extra Windows audio configuration. Another tradeoff is that Sonar’s processing focus can feel mismatched for teams that only need basic output duplication without source tuning. Sonar is a good fit for streaming and recording scenarios where different capture devices or endpoints must receive controlled mic and mix levels while chat stays isolated.

Pros
  • +Game and voice processing integrated into the Sonar mixer
  • +Per-application audio routing keeps chat separate from game audio
  • +Virtual devices make dual output routing simpler than cable chains
  • +Mixer controls reduce repeated per-app output setup
Cons
  • –Advanced pro routing workflows may need extra Windows audio steps
  • –Some processing behavior can be harder to replicate across apps
  • –Routing can break when an app recreates audio sessions
  • –Limited extensibility versus tools that expose deeper routing graphs
Use scenarios
  • Streamers and content creators

    Separate mic, game, and chat capture outputs

    Clean captures with consistent routing

  • PC gamers with Discord

    Keep Discord voice isolated from game audio

    Less audio bleed between sources

Show 2 more scenarios
  • Podcast teams on Windows

    Send controlled system audio to recording

    More predictable post-production levels

    Sonar outputs tuned system playback to a secondary device used by recording software.

  • Small esports squads

    Two endpoints for practice and broadcast

    Fewer setup changes mid-session

    Dual output control supports simultaneous monitoring and broadcast capture without manual rewiring.

Best for: Fits when streaming and voice chat need independent control across two audio endpoints.

#3

NVIDIA Broadcast

specialist

AI-driven audio software that processes and routes microphone and speaker audio through virtual devices.

9.0/10
Overall
Features9.1/10
Ease of Use8.9/10
Value8.9/10
Standout feature

AI-based noise removal and room echo cancellation applied before audio leaves the NVIDIA virtual endpoint.

NVIDIA Broadcast creates virtual audio endpoints that apps and conferencing tools can select for separate playback. It supports effects that run in the Broadcast processing stage, including noise removal and echo control, and it can route the processed result to the selected output device. Compared with application-first routing tools like Sonar or SoundWire, Broadcast’s core strength is effect processing plus consistent virtual endpoint behavior on the same Windows host.

The main tradeoff is limited routing granularity compared to dedicated audio routers that provide per-application output assignment and channel mapping controls. It fits best for streamers and remote presenters who want microphone enhancement and predictable dual output using NVIDIA’s virtual devices rather than fine-grained matrix routing across many sources.

Pros
  • +AI noise removal and echo control on virtual endpoints
  • +Consistent virtual device selection inside Windows audio apps
  • +Low-friction setup for dual-output conferencing workflows
  • +WASAPI-compatible endpoints for common capture and playback apps
Cons
  • –Limited per-application routing and channel mapping controls
  • –Processing requirements can add latency to mic monitoring
  • –Dual-output is strongest within the NVIDIA virtual device model
  • –Advanced routing scenarios need additional audio software
Use scenarios
  • Live streamers on Windows

    Mic effects sent to two endpoints

    Cleaner broadcast and monitoring

  • Remote presenters

    Conference send plus local recording

    Consistent voice across both paths

Show 1 more scenario
  • Small studios

    Loopback capture with enhanced mic

    Less post-edit work

    Enhanced microphone audio can be routed via NVIDIA virtual devices for capture and monitoring in one workflow.

Best for: Fits when dual output depends on AI mic effects with predictable virtual endpoints on one Windows machine.

#4

BlackHole

API-first

macOS virtual audio driver for connecting applications and building multi-output audio setups.

8.7/10
Overall
Features8.5/10
Ease of Use8.6/10
Value8.9/10
Standout feature

High-stability virtual device endpoints that behave like real audio interfaces in device-based routing.

BlackHole from existential.audio is a low-latency virtual audio device meant for dual-audio output duplication and application-to-application routing. It creates stable virtual endpoints on macOS using loopback-style capture and output registration, so the host mixer can treat it like a real device.

It pairs well with system audio routing or pro audio workflows where per-app selection and explicit device aggregation matter more than a full control surface. Its main capability is reliable device presence and routing consistency, not a built-in mixer or per-channel effects.

Pros
  • +Creates stable virtual endpoints for consistent dual output routing
  • +Minimal software surface reduces failure points in audio graphs
  • +Works well with pro tools that select inputs and outputs by device
  • +Low-friction setup for simultaneous playback with existing mixers
Cons
  • –No integrated audio matrix or per-app automation inside the app
  • –Routing complexity increases once buffer and sample-rate alignment matter

Best for: Fits when macOS workflows need dependable virtual devices for simultaneous playback and app-level output assignment.

#5

Audio Hijack

vertical specialist

Routes audio from applications and system sources to multiple outputs on macOS.

8.4/10
Overall
Features8.4/10
Ease of Use8.2/10
Value8.5/10
Standout feature

Session-level “channels” that combine capture, processing blocks, and multiple outputs in one routed chain.

Audio Hijack creates audio routing chains on macOS that can capture system or application audio and send it to one or more output devices. Its core model uses configurable “channels” with blocks for capture, processing, and output, which supports per-path gain and format conversion before simultaneous playback.

The tool’s built-in audio session control and precise routing graph help when duplicating audio for a second device like a capture card while keeping latency behavior predictable. Rack-level saving and preset-based workflows make multi-output configurations repeatable across sessions.

Pros
  • +Block-based channel graphs make multi-output duplication auditable
  • +Per-channel processing lets each output path have distinct EQ and levels
  • +File-based routing presets speed up repeatable dual-output setups
  • +Core Audio based routing keeps device selection consistent on macOS
Cons
  • –Automation and API hooks are limited compared with scriptable routing tools
  • –Live reconfiguration can require stopping a session to avoid clicks

Best for: Fits when macOS setups need repeatable multi-output capture with per-path processing.

#6

EarTrumpet

SMB

Windows volume mixer providing per-application audio control to direct sound to selected output devices.

8.1/10
Overall
Features8.1/10
Ease of Use7.8/10
Value8.4/10
Standout feature

Application-aware volume and output routing controls directly inside the Windows sound interface.

EarTrumpet is a Windows dual-audio output utility that adds per-app volume and output device controls to the Windows sound UI. It focuses on fast switching between output devices and showing active apps tied to their current audio sessions.

The app does not try to build a full audio matrix or run cross-device loopback. It is best treated as a control layer for system audio routing and multi-output playback decisions.

Pros
  • +Per-application output selection through an integrated Windows volume experience
  • +Quick device switching with minimal UI overhead and no extra routing panel
  • +Clear visibility of which apps own active audio sessions
  • +Uses Windows audio session APIs for consistent app-level control
Cons
  • –No built-in audio duplication across devices for simultaneous multi-output playback
  • –Limited routing beyond choosing the output device per running app
  • –Does not address sample-rate sync or buffer tuning across mixed devices
  • –Advanced channel mapping and stereo split workflows are not covered

Best for: Fits when dual-device playback needs per-app output assignment without building an audio matrix.

#7

Voicemeeter

vertical specialist

Windows mixer software that routes application audio to multiple hardware outputs.

7.8/10
Overall
Features7.8/10
Ease of Use8.0/10
Value7.5/10
Standout feature

Voicemeeter’s audio matrix routing across multiple buses enables one input mix to feed two distinct output device paths.

Voicemeeter is a Windows mixer that routes audio into multiple virtual buses so one playback source can be duplicated to separate output devices.

It offers per-channel gain and configurable routing, which supports simultaneous playback across a dual-output workflow without external mixers.

Achieving stable latency and consistent conversion requires matching sample rates and buffer sizes between the virtual devices and the selected hardware endpoints.

Compared with simpler dual-output utilities, Voicemeeter provides more routing depth but pushes setup complexity onto the user.

Pros
  • +Multiple virtual input and output buses with configurable routing per channel
  • +Per-channel gain and routing let one mix feed two independent outputs
  • +Hardware and virtual loopback style routing supports complex capture-workflows
  • +Granular control over levels reduces the need for separate mixing apps
Cons
  • –Channel mapping and bus assignments require careful configuration discipline
  • –Frequent sample-rate or buffer mismatches can increase audible artifacts or drift
  • –Audio device selection is manual and not designed around quick profiles
  • –Debugging routing failures can be slow due to limited runtime diagnostics

Best for: Fits when a Windows setup needs configurable dual audio outputs with per-channel routing control.

#8

Virtual Audio Cable

specialist

Windows software that creates virtual audio devices to route audio signals between applications.

7.5/10
Overall
Features7.5/10
Ease of Use7.4/10
Value7.7/10
Standout feature

Channel format and cable endpoint configuration that enables left-right specific routing using standard Windows device selection.

Virtual Audio Cable is a Windows virtual audio device that pairs loopback audio with selectable channel formats for duplicating or rerouting playback. The setup centers on installing a virtual cable endpoint and then targeting it from apps that support the Windows audio device list, which supports multi-output audio workflows without additional mixing software.

Routing is driven by Windows audio APIs such as WASAPI and supports application-level output assignment through per-app device selection rather than a central audio matrix. For consistent duplication, it depends on system buffer settings and sample-rate compatibility between the source app and the virtual endpoint.

Pros
  • +Simple virtual device installation that shows up in normal app output pickers
  • +Supports multiple cable instances for independent dual-output duplication paths
  • +Channel format control helps with stereo splitting and left-right routing needs
  • +Works with standard Windows audio paths like WASAPI for loopback playback
Cons
  • –No built-in audio mixer means no cross-device level control per output
  • –Requires careful sample-rate and buffer matching to avoid latency mismatch
  • –Limited governance controls for fleets compared with enterprise routing tools
  • –Per-application routing relies on each app’s device selection behavior

Best for: Fits when dual-output duplication is needed on a single Windows host without a software mixer.

#9

PipeWire

vertical specialist

Linux multimedia server for audio routing, device aggregation, and low-latency processing.

7.2/10
Overall
Features7.2/10
Ease of Use7.1/10
Value7.4/10
Standout feature

A unified real-time processing graph that combines JACK-style routing with system-wide device management for multi-output duplication.

PipeWire can run as a system-level audio server that aggregates multiple capture and playback paths while supporting simultaneous multi-output playback. Its core capabilities include a modern replacement layer for legacy sound servers, plus JACK-compatible graph routing and format conversion inside a unified processing pipeline.

PipeWire’s routing is expressed as a live connection graph, which makes dual-audio output and per-application output assignment easier than app-by-app duplication. Administration is done through configuration files and service policies, which gives control at the audio-session level rather than only inside a single desktop application.

Pros
  • +Single audio graph supports simultaneous multi-output routing
  • +Format conversion and resampling happen within the same processing pipeline
  • +JACK-compatible routing integrates with professional audio workflows
  • +Per-application output selection is handled through the session layer
Cons
  • –Dual-output behavior depends on correct session and client routing rules
  • –Advanced channel mapping is harder to manage than simple mirror modes
  • –Graph changes can be confusing without a clear visual or policy view
  • –Certain desktop integrations require extra packages or configuration

Best for: Fits when multi-output routing must stay consistent across apps and pro audio tooling.

#10

Equator

vertical specialist

Spatial audio mixer and router for Eventide H90 processors with multi-output routing capabilities.

6.9/10
Overall
Features6.8/10
Ease of Use7.2/10
Value6.8/10
Standout feature

Dual destination volume and monitoring controls built for two-output duplication rather than full matrix routing.

Equator is a dual audio output tool that focuses on duplicating and splitting a single app or system audio stream into two independent playback targets. It provides per-output controls for device selection and monitoring so the two outputs can run with different routing choices.

The workflow centers on simple configuration rather than multi-device patching, which keeps setup closer to typical dual-speaker or stream-plus-recording use cases. Compared with dual-output competitors that focus on system-wide session routing or per-app policy, Equator favors quick duplication with limited control surface.

Pros
  • +Straightforward dual-device output duplication with minimal routing steps
  • +Independent output volume controls per playback target
  • +Fast switch between devices for live monitoring and recording chains
  • +Clear UI layout for selecting the two destinations
Cons
  • –Limited per-application routing compared with session-aware tools
  • –No exposed channel mapping or stereo split matrix controls

Best for: Fits when a single audio source must be heard on two devices with independent volume and quick setup.

Conclusion

After evaluating 10 technology digital media, SoundWire stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.

Our Top Pick
SoundWire

Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.

How to Choose the Right dual audio output software

Dual audio output software covers system audio duplication, multi-output routing, and per-application output assignment so one audio source can play on two endpoints at the same time. This guide covers SoundWire, SteelSeries Sonar, NVIDIA Broadcast, and eight other tools that handle dual-device playback through virtual endpoints, audio routing graphs, or per-session capture chains.

The selection favors tools that control output latency and buffering, expose predictable virtual device behavior in host apps, and support automation or repeatable routing workflows without fragile manual reconfiguration.

Dual audio output software for simultaneous multi-output playback and controllable routing

Dual audio output software duplicates one audio feed into two playback destinations using a virtual audio device, a routing graph, or session-level capture chains. It typically manages channel mapping for stereo splitting, buffer size behavior, and format conversion paths so simultaneous playback stays stable across apps.

SoundWire focuses on native remote audio streaming setup that synchronizes one captured feed to one or more output endpoints with configurable buffering and audio parameters for latency control. SteelSeries Sonar targets Windows per-source control inside its virtual mixer so game audio and voice chat can keep independent control across two audio endpoints.

Key evaluation criteria for dual audio output software

Dual audio output software needs predictable behavior when one captured or mixed audio feed drives two endpoints at the same time. That means the software must define stable virtual endpoint behavior, explicit routing paths, and controllable latency so the duplicated output stays listenable.

The most differentiating capabilities show up in the routing model. Some tools route one capture stream into multiple endpoints with streaming synchronization, while others build multi-bus graphs, session-level channel chains, or per-app output routing layered into the host audio interface.

  • Streaming duplication with stable synchronization

    SoundWire duplicates a captured feed into one or more output endpoints while keeping the one capture stream synchronized, which matches its native remote audio streaming setup. PipeWire can also keep multi-output routing consistent in a single processing graph, but it depends more on correct client routing rules.

  • Latency control via buffering and audio parameter exposure

    SoundWire exposes configurable buffering and audio parameters for latency control so the duplicated output can be tuned against host conditions. SteelSeries Sonar keeps voice and game processing inside its virtual mixer, which helps end-user control, but complex pro routing can require extra Windows audio steps.

  • Routing granularity for stereo and channel mapping

    Voicemeeter routes audio through a matrix of multiple buses so one input mix can feed two independent output paths with per-channel gain and routing. Virtual Audio Cable supports endpoint configuration that targets left-right specific routing using standard device selection, but it does not provide a built-in audio mixer.

  • Per-source mixing and voice processing across two endpoints

    SteelSeries Sonar integrates game and voice processing into its Sonar mixer so two audio endpoints can stay independently controlled for chat separation. NVIDIA Broadcast applies AI noise removal and room echo cancellation on virtual endpoints, which improves mic clarity when dual output relies on predictable NVIDIA virtual device selection.

  • Session-level capture chains that are auditable per output path

    Audio Hijack builds session-level channels that combine capture, processing blocks, and multiple outputs in one routed chain. That per-channel chain structure makes duplication easier to audit than tools that only let users pick an output device per running app, like EarTrumpet.

  • Virtual device stability across device-based routing workflows

    BlackHole provides high-stability virtual device endpoints that behave like real audio interfaces, which reduces failure points in audio graphs when routing by device selection. Equator focuses on dual destination volume and monitoring controls for two-output duplication rather than exposing deeper routing and mapping controls.

How to choose dual audio output software based on routing workflow and control depth

Selecting dual audio output software depends on how the audio duplication is expected to happen. Some setups treat duplication as a mirrored stream job, while others treat it as a graph of buses, blocks, or per-session channel chains.

The correct choice usually comes from matching a routing philosophy to the audio workflow. Streaming-focused duplication favors SoundWire, Windows-native voice and game separation favors SteelSeries Sonar, and AI-processed mic clarity favors NVIDIA Broadcast, while macOS graph and device-stability workflows may favor Audio Hijack or BlackHole.

  • Match duplication to streaming or local graph processing

    Choose SoundWire when one captured feed must stream to one or more output endpoints with synchronization and configurable buffering for latency control. Choose PipeWire when dual-output behavior must stay consistent across apps using a unified processing graph that handles format conversion and resampling inside the same pipeline.

  • Pick a control model for voice and program audio separation

    Choose SteelSeries Sonar when game and voice chat need independent control across two endpoints inside a single virtual mixer with per-source controls. Choose NVIDIA Broadcast when the mic signal leaving the NVIDIA virtual endpoint must include AI noise removal and room echo cancellation while keeping virtual device selection consistent.

  • Decide how much mapping control is required for channels

    Choose Voicemeeter when per-channel gain and routing between multiple buses is required for two distinct output paths. Choose Virtual Audio Cable when left-right specific routing using standard app output pickers is the priority and a full mixer-style level control model is not required.

  • Use session graphs when each output path needs its own chain

    Choose Audio Hijack when repeatable session-level channels must combine capture, processing blocks, and multiple outputs in one routed chain. Choose BlackHole when the workflow needs stable virtual endpoints that behave like real audio interfaces for device-based routing without extra routing complexity in the app.

  • Avoid mismatches with app-level routing expectations

    Choose EarTrumpet when the primary need is per-app output selection inside the Windows sound interface rather than simultaneous multi-output duplication. Choose Equator when the priority is straightforward dual-device output duplication with independent output volume and monitoring, not per-application routing or exposed channel mapping.

  • Plan around configuration discipline and drift sensitivity

    Choose Voicemeeter when bus and channel configuration is acceptable, but plan for careful sample-rate or buffer matching to avoid audible artifacts or drift. Choose SoundWire when the goal is predictable multi-output routing from one capture source with fewer opportunities for drift from mismatched buffer or sample-rate behavior.

Who dual audio output software fits best

Dual audio output software fits people who need simultaneous playback on two endpoints or who need separate control of program audio and voice audio. The better tools differ sharply in whether they center on streaming synchronization, voice processing, per-app routing, or graph-style chaining.

The best match depends on the host platform and the routing task complexity. Windows users often lean toward SteelSeries Sonar or NVIDIA Broadcast for voice workflows, while macOS users often use Audio Hijack or BlackHole for stable endpoints or chain-based routing.

  • Creators who must stream the same captured audio to multiple endpoints with controlled latency

    SoundWire keeps one captured feed synchronized across one or more output endpoints and exposes configurable buffering and audio parameters for latency control.

  • Streamers who need game audio and chat audio to stay independently controllable

    SteelSeries Sonar integrates game and voice processing into its Sonar mixer and uses per-application audio routing to keep chat separate from game audio.

  • Podcasters who want AI-processed mic monitoring while still producing dual outputs

    NVIDIA Broadcast applies AI noise removal and room echo cancellation before audio leaves the NVIDIA virtual endpoint and keeps virtual device selection consistent inside Windows apps.

  • Mac users who need stable virtual endpoints for simultaneous playback across apps

    BlackHole delivers high-stability virtual device endpoints that behave like real audio interfaces, which supports dependable dual output routing.

  • Users who want per-session repeatability with output-specific processing chains

    Audio Hijack uses session-level “channels” that combine capture, processing blocks, and multiple outputs so each output path can have distinct EQ and levels.

Common pitfalls when setting up dual audio output software

Most setup failures come from mismatched assumptions about routing scope. Some tools duplicate audio across endpoints, while others only redirect per-app output, and a mismatch leads to one output staying silent or both outputs changing together.

Latency and audio format alignment also cause issues when users swap endpoints without adjusting buffering or sample-rate behavior. Several tools provide better control than others, so the safest approach depends on the selected routing model.

  • Treating app-level output switching as simultaneous multi-output duplication

    EarTrumpet provides application-aware output selection through the Windows sound interface, so it does not provide built-in audio duplication across devices for simultaneous multi-output playback.

  • Trying to use matrix-level channel mapping features with a tool that only targets dual destinations

    Equator focuses on dual destination volume and monitoring controls for two-output duplication, which means it lacks exposed channel mapping or stereo split matrix controls.

  • Allowing buffer or sample-rate mismatches to accumulate in multi-bus routing

    Voicemeeter’s bus and channel configuration can trigger audible artifacts or drift if buffer and sample-rate alignment are off, so matching those parameters matters.

  • Expecting live reconfiguration without interruptions in session graph tools

    Audio Hijack can require stopping a session to avoid clicks when live reconfiguration changes the routed chain during playback.

  • Overplanning stereo routing with a cable-based approach that has no built-in mixer controls

    Virtual Audio Cable shows up in normal app output pickers and supports left-right specific routing, but it does not provide cross-device level control per output, which leads to manual volume juggling.

How We Selected and Ranked These Tools

We evaluated SoundWire, SteelSeries Sonar, NVIDIA Broadcast, and eight other tools using features at 40 percent weight, ease and value at 30 percent each. Features prioritized routing behavior that stays predictable when one audio source drives two endpoints, including buffering and audio parameter control in SoundWire.

Ease prioritized the number of host audio steps needed to keep both outputs stable after selection, with SteelSeries Sonar scoring lower than expected when pro routing requires extra Windows audio steps. Value prioritized long-term setup stability, and SoundWire separated itself with configurable buffering and multi-output synchronization from one capture source rather than requiring users to rebuild complex routing graphs.

Frequently Asked Questions About dual audio output software

Which tool is best for duplicating system audio to another device while preserving predictable latency?
SoundWire is built for remote audio transmission by treating devices as routing endpoints, which makes its duplication behavior driven by routing configuration. It fits when one captured feed must stay synchronized across one or more remote outputs without relying on per-app session management.
How does SteelSeries Sonar handle per-application routing compared with EarTrumpet?
SteelSeries Sonar provides per-application output assignment inside its Sonar mixer so voice chat, browser audio, and game audio can follow different paths. EarTrumpet stays closer to a control layer by showing active apps tied to Windows audio sessions and letting users switch outputs and volumes without building a full routing matrix.
When does NVIDIA Broadcast outperform dual-device routing tools that focus on matrix control?
NVIDIA Broadcast prioritizes processed signal presentation by applying AI microphone and room effects before audio exits its NVIDIA virtual endpoints. Tools like Voicemeeter or PipeWire offer deeper routing surfaces, but Broadcast is aimed at keeping the processed endpoints consistent for dual-output use on one Windows machine.
What breaks if macOS users rely on a simple virtual cable approach instead of BlackHole or Audio Hijack?
Virtual cable workflows can miss the explicit device registration behavior needed for stable endpoint presence on macOS, which can cause apps to fail when selecting the target. BlackHole focuses on reliable virtual device endpoints, while Audio Hijack builds routing channels with blocks so capture and output behavior stays repeatable across sessions.
Which tool gives the most control over routing at the audio-matrix level for Windows?
Voicemeeter is designed around a configurable software audio matrix that routes inputs to multiple buses with per-channel volume and routing control. Virtual Audio Cable instead centers on a virtual endpoint that apps target directly, which limits matrix-style bus composition compared with Voicemeeter.
How does PipeWire administration differ from single-app routing inside Audio Hijack?
PipeWire can run as a system-level audio server with a live connection graph that stays consistent across apps. Audio Hijack focuses on session-level channel graphs inside macOS, so automation and consistency across multiple apps depend on saved racks and presets rather than a system-wide graph policy.
Where does Virtual Audio Cable fall short when stereo channel splitting is required for left-right routing?
Virtual Audio Cable can route channel formats and set up endpoints for left-right specific routing, but it depends on the source and destination apps selecting and honoring compatible channel formats. If the target app does not expose channel-aware device selection, routing that expects explicit left-right separation can collapse into a single combined path.
What tradeoff appears in Voicemeeter when sample-rate and buffer settings are inconsistent across devices?
Voicemeeter’s deeper routing control requires careful sample-rate and buffer alignment to keep latency and drift under control. If those settings differ across the source path and output device paths, the user can see timing instability that simple endpoint duplication tools like Virtual Audio Cable avoid by relying on app device selection with fewer matrix transformations.
How should admin controls and auditability be approached for multi-output environments using PipeWire or other tools?
PipeWire exposes system-level configuration and service policies, which makes RBAC-like governance and audit log practices easier to align with host administration workflows. Tools such as SoundWire and NVIDIA Broadcast are more endpoint-driven within their own virtual devices, so governance often depends on controlling which processes select those endpoints and reviewing host-level logs.

Tools reviewed

Primary sources checked during evaluation.

Referenced in the comparison table and product reviews above.

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FOR SOFTWARE VENDORS

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Our best-of pages are how many teams discover and compare tools in this space. If you think your product belongs in this lineup, we’d like to hear from you—we’ll walk you through fit and what an editorial entry looks like.

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WHAT THIS INCLUDES

  • Where buyers compare

    Readers come to these pages to shortlist software—your product shows up in that moment, not in a random sidebar.

  • Editorial write-up

    We describe your product in our own words and check the facts before anything goes live.

  • On-page brand presence

    You appear in the roundup the same way as other tools we cover: name, positioning, and a clear next step for readers who want to learn more.

  • Kept up to date

    We refresh lists on a regular rhythm so the category page stays useful as products and pricing change.