Multiple audio outputs
Route audio to compatible Bluetooth, USB, HDMI, wired, and built-in outputs.
Audio-technology illustration. Device compatibility varies.
01 / Control
Choose what plays.
Bring your outputs together. Keep control of every route.
System, application, or test audio
Choose a source supported by your operating system. Refresh the running-application list when your source changes.
Add outputs while routing
Include another available output without manually stopping the session.
Independent app sources
On compatible Windows builds, assign a different application to each routed output—for example, music to speakers and chat to a headset.
Playback and master controls
Start, pause, resume, stop, and adjust master volume or mute.
Live output awareness
See available, selected, connected, playing, muted, and waiting states, plus guarded one-second device refresh on the visible Control page.
Audio-driven waveform
Watch routed audio levels after volume and EQ. On Windows, the default-output meter can also drive the waveform before routing starts.
Application capture depends on OS permissions and source-app policy. Separate browser tabs are not guaranteed separate audio sources. Exited or unavailable app sources do not silently fall back to all system audio.
02 / Sound & EQ
Shape every speaker.
Adjust the sound of each routed output, not just the whole mix.
Per-output volume and mute
Set the level of each routed speaker independently. Supported Windows default-output volume and mute controls affect that system endpoint.
Balance and channel modes
Adjust left/right balance. Choose stereo, mono mixdown, left only, right only, or swap left/right channels.
Five-band equalizer
Shape 80 Hz, 250 Hz, 1 kHz, 4 kHz, and 12 kHz, with gains from −12 dB to +12 dB in 0.5 dB steps.
Twelve built-in presets
Choose a starting point for music, speech, films, gaming, bass, and more. Explore every preset below.
Custom presets
Name, save, and edit your own five-band curves. Apply a built-in or custom preset from each output’s Device settings.
Clipping protection
A safety limiter remains active after routed output gain and EQ, with a 0.98 peak ceiling.
EQ, balance, channel processing, and added delay apply to PairChord-routed audio. They do not intercept the direct Windows default-output path. Start at a comfortable listening level.
Find your listening curve.
Explore all 12 built-in presets, then create your own in the app.
General
Visual preview only. No audio is played or changed.
Band gains, not a measured frequency response.
View every preset’s band values
General
- 80 Hz
- 0 dB
- 250 Hz
- 0 dB
- 1 kHz
- 0 dB
- 4 kHz
- 0 dB
- 12 kHz
- 0 dB
Movies
- 80 Hz
- +3 dB
- 250 Hz
- +1 dB
- 1 kHz
- +1 dB
- 4 kHz
- +2 dB
- 12 kHz
- +2 dB
TV
- 80 Hz
- -2 dB
- 250 Hz
- 0 dB
- 1 kHz
- +3 dB
- 4 kHz
- +4 dB
- 12 kHz
- +1 dB
Transcription
- 80 Hz
- -4 dB
- 250 Hz
- -1 dB
- 1 kHz
- +5 dB
- 4 kHz
- +4 dB
- 12 kHz
- -2 dB
Music
- 80 Hz
- +2 dB
- 250 Hz
- +1 dB
- 1 kHz
- 0 dB
- 4 kHz
- +1 dB
- 12 kHz
- +2 dB
Voice
- 80 Hz
- -3 dB
- 250 Hz
- -1 dB
- 1 kHz
- +4 dB
- 4 kHz
- +3 dB
- 12 kHz
- 0 dB
Volume Boost
- 80 Hz
- +2 dB
- 250 Hz
- +2 dB
- 1 kHz
- +2 dB
- 4 kHz
- +2 dB
- 12 kHz
- +2 dB
Gaming
- 80 Hz
- +3 dB
- 250 Hz
- +1 dB
- 1 kHz
- 0 dB
- 4 kHz
- +3 dB
- 12 kHz
- +2 dB
Classic Processing
- 80 Hz
- +2 dB
- 250 Hz
- +1 dB
- 1 kHz
- 0 dB
- 4 kHz
- +1 dB
- 12 kHz
- +1 dB
Light Processing
- 80 Hz
- +1 dB
- 250 Hz
- +0.5 dB
- 1 kHz
- 0 dB
- 4 kHz
- +0.5 dB
- 12 kHz
- +1 dB
Bass Boost
- 80 Hz
- +6 dB
- 250 Hz
- +4 dB
- 1 kHz
- 0 dB
- 4 kHz
- -1 dB
- 12 kHz
- -2 dB
Streaming Video
- 80 Hz
- +2 dB
- 250 Hz
- 0 dB
- 1 kHz
- +2 dB
- 4 kHz
- +3 dB
- 12 kHz
- +1 dB
03 / Groups & device settings
Save your setup.
Keep familiar speaker combinations ready for your next session.
Named speaker groups
Create, edit, and delete groups for rooms or listening setups.
Ordered group members
Choose known outputs and move members up or down to keep your preferred order.
Quick group selection
Choose a saved group directly from Control and manage its members from Groups.
Missing-device awareness
Recognize unavailable saved members instead of losing track of your group’s devices.
Device nicknames and details
Give outputs recognizable names while keeping their original names, transport, sample rate, and channel information available.
Reset device settings
Return an individual device’s saved controls to their defaults when you want a fresh start.
Connect or pair devices through your operating system first. Group membership does not make an unsupported or disconnected device available.
04 / Control & Calibration
Bring timing closer.
Compare your speakers, align faster paths, and monitor changes.
Manual output delay
Add 0–2,000 ms of delay to routed outputs, including fine adjustments in 1 ms steps.
Synchronized pulse test
Play a test pulse across selected outputs. Choose a reference and fine-tune a different routed output by ear; the Windows default output can be the reference.
Auto Optimize on Windows
During supported system-audio routing, compare selected outputs and the default using latency estimates. PairChord can stop, switch the default to the slowest estimated path, update delays, and restart routing.
Windows default-output selector
While routing is stopped, change the Console and Multimedia default output. The communications default is left unchanged.
Drift correction and recovery
Adaptive synchronization monitors independent output paths, with bounded buffering and recovery when a device or capture path is interrupted.
Synchronization summary
Monitor output count, timing deviation, overall sync quality, and routing duration while listening.
Windows plays its default output directly, so PairChord cannot delay that path. Auto Optimize is estimate-based and is not available for independent per-output app assignments. Bluetooth jitter and device buffering can still require manual calibration. The pulse test is not microphone-based measurement.
05 / Diagnostics
See what’s happening.
Get useful context when a route needs attention.
Per-output health
Inspect synchronization error, estimated latency, buffer fill, drift correction, and connection or recovery state where reported.
Buffer and recovery counters
Track underruns, overruns, and recoveries to help identify an unstable path.
Recent session history
Review session duration, output count, recovery totals, and completed or interrupted sessions.
Copy a support summary
Copy a concise diagnostic summary when you need to describe a problem.
Export local diagnostics
Choose to save a diagnostic report and review local log status and size. Reports do not contain recorded audio.
Diagnostic values describe what the engine can observe; they are not a measurement of the sound arriving at your ears. Exporting a report does not automatically upload it.
06 / Settings / Phone remote control
Your sound. Within reach.
Control PairChord on your computer from a phone, tablet, or another computer’s browser.
Open a shared control link
Start sharing in Settings, then open the displayed LAN URL on a device connected to the same trusted private network. No companion app installation is needed.
PIN or password access
Choose a dedicated 6–12 digit PIN or a 10–128 character password that is not all digits. Visitors must sign in before they can control your audio.
Two configurable access timers
Set how long each login lasts and how long sharing stays open, from 1 minute to 24 hours. Login access cannot outlast the sharing session.
Playback and volume from your browser
Start, pause, resume, or stop routing. Adjust master volume and mute, select available outputs, and change each output’s volume, mute, or supported delay.
See output activity
Check which outputs are selected, connected to PairChord, or playing. Unavailable controls and stale device information are clearly indicated.
End access without stopping the music
Stop sharing to revoke every remote session while your audio continues. Sharing expires automatically and stays off after restarting the app.
Desktop browser remote control—not a native mobile app. Audio stays on the computer’s outputs; it is not streamed to your phone. Source selection, EQ editing, and sharing settings remain on the desktop. Sharing uses unencrypted HTTP: use a trusted private network only, never public Wi-Fi, port forwarding, or an Internet tunnel. Windows direct-default output selection and delay restrictions still apply.
07 / Settings & walkthrough
Make it yours.
Personalize the interface and decide how PairChord starts.
Light, dark, or system theme
Match your desktop appearance or choose your preferred app theme.
Seven primary colors
Choose White, Blue, Red, Purple, Orange, Green, or Yellow for app accents and audio visualization.
Three interface languages
Switch the app between English, Simplified Chinese, and Malay (Malaysia).
Open at Startup
On Windows and macOS, launch hidden in the system tray or menu bar. Audio routing never starts automatically.
Tray quick controls
Open the interface, inspect session status, mute, or start and stop routing from the desktop tray menu.
Restore last configuration
Restore saved selections and controls after launch. Restored launch volume is capped at 75%, and routing still waits for you.
Skippable first-run walkthrough
Follow the highlighted controls for sources, outputs, volume, timing, and EQ. Skip the tutorial or replay it from Settings.
Optional device-test reminder
Enable the startup sync reminder, go directly to testing, or suppress future reminders.
On-device audio processing
Core audio processing and saved preferences stay on your device, without audio uploads, advertising, or analytics.
These are desktop app preferences. Website language and appearance are separate; the Features page does not change your installed app.
A real workspace.
Not just a feature list.
See the sources, output controls, waveform, and synchronization summary together in Control.
View full-size
Know your setup.
Capabilities depend on your operating system, permissions, and devices.
- Windows
- System and application capture on compatible builds. Per-output app routing, default-output selection, Auto Optimize, and default-output waveform support.
- macOS
- macOS 14.2 or later. System and application capture require Screen & System Audio Recording permission. Per-output app assignments, the default-output selector, and Auto Optimize are Windows-only.
Bluetooth timing varies. Calibration may still be needed; there is no zero-delay guarantee. Public installers remain pending release validation.