Audio Mixer

Desktop Electron app for low-latency audio routing and monitoring with per-input mixing controls.

Features

• Up to 3 input sources with independent controls per input:
  • Enable/disable input
  • Monitor 1 send volume + mute
  • Monitor 2 send volume + mute
  • Mixed output send volume + mute
  • Force mono
• 3 independent output buses:
  • Monitor Output
  • Monitor 2 Output
  • Mixed Output
• Master controls and live meters for each bus.
• EQ (low/mid/high), overload gain, and limiter stages.
• Presets for full routing snapshots and custom EQ presets.
• Device safety options:
  • Prevent duplicate device selection in input/output groups
  • Cable loop protection (Input/Output cable pair guard)
  • Optional bypass toggle in Advanced settings
• Tray behavior (close to tray), start-on-boot option, compact mode.

Tech Stack

• Electron
• Vanilla HTML/CSS/JavaScript (no frontend framework)

Requirements

• Windows audio devices with setSinkId support for output device assignment

Routing Model

Each input is split into three send paths:

• Monitor 1 chain
• Monitor 2 chain
• Mixed Output chain

Each chain has its own master gain and meter. Monitor chains are independent.

Advanced Settings

• Start app on system boot
• Show multichannel devices
• Enforce routing safety restrictions (duplicate/cable-loop guard)
• EQ preset management + EQ controls
• Overload gain

Troubleshooting

• If no output is heard, verify output bus selectors are not set to (None).
• If an option is disabled, hover to see the reason (duplicate selection or cable-loop guard).
• If devices change while the app is running, routing auto-refreshes and may rebind.
• If packaged build behavior differs from dev, re-check config.json migration/version and rebuild.