Mixer Overview
Toggle: 2 or F9
The Mixer provides 128 mixer tracks with a master strip and 3 visible return bus strips (12 available in the engine).
Each track strip includes (top to bottom): 1. Track name and type badge (Audio / Instrument / Bus / VCA) 2. 10 insert effect slots 3. Input trim knob (pre-fader) 4. 3 send knobs (Aux A, B, C — engine supports 12 sends, pre or post fader) 5. Pan knob (constant-power pan law via lookup table) 6. Fader (0 dB center, range: −∞ to +12 dB, per-sample ramping) 7. dB readout 8. L/R level meters (pre or post fader) 9. Peak hold indicator (click to reset) 10. Polarity invert and mono collapse buttons 11. Mute / Solo / Record Arm toggles
Insert Slots
Each track has 10 insert slots. Click an empty slot to open the plugin browser. Click a filled slot to open the plugin GUI editor. Drag slots to reorder. Right-click for bypass and remove options.
Effect slot changes use atomic pointer swap with generation-based deferred deletion — no audio glitches during live effect swaps.
Master Strip
Same controls as track strips with 10 master insert slots for mastering effects. Includes a soft limiter (tanh crossfade above knee) and independent metering.
Send/Return Buses
- 12 send/return buses — available in the engine
- 3 visible — in the mixer UI (Return A, B, C) with per-strip send knobs
- Each track has 12 send levels with per-send pre/post fader configuration
- Each return bus has 4 insert slots
- Typical use: shared reverb, delay, or parallel compression
Routing Matrix
Open via View > Mixing & Analysis > Routing Matrix
A grid-based routing view supporting up to 256 nodes and 1024 connections. Node types: Track, Bus, Group, Master. Click intersections to toggle connections. Right-click routes to adjust level, pan, and pre/post fader settings.
Sidechain Routing
Up to 32 sidechain routes. Route any track's output to another track's sidechain input. Common uses include sidechain compression, sidechain gating, and dynamic EQ triggering.
VCA Groups
Group multiple tracks under a VCA master for proportional volume control. Group mute/solo affects all members. Collapsible in the mixer view.
Dolby Atmos 7.1.4
Native spatial audio rendering built into the mixer:
- 7.1.4 bed — plus up to **118 audio objects**
- Output layouts — : Stereo, 5.1, 7.1, 7.1.4
- VBAP — (Vector Base Amplitude Panning) for 3D source positioning
- Per-object controls — : azimuth, elevation, distance, spread, gain
- Binaural downmix — for headphone monitoring
- ADM metadata export — for Atmos deliverables
Open the Surround Panner via View > Mixing & Analysis > Surround Panner.
Metering
Loudness Panel (Ctrl+L): - Integrated LUFS (full session) - Short-term LUFS (3-second window) - Momentary LUFS (400 ms window) - True Peak (L/R with clip indicator) - Stereo Correlation gauge - Loudness Range (LRA) histogram - Platform targets: Spotify −14, Apple −16, YouTube −14, CD −9
Spectrum Analyzer (Ctrl+Shift+A): - Per-track colored frequency curves (up to 10 visible) - Master bus curve - 20 Hz–20 kHz log-frequency axis - Peak hold with 5-second decay - Pre/post fader analysis modes
Audio Graph
The mixer uses a DAG-based routing engine with topological sort (Kahn's algorithm). Double-buffered topology snapshots ensure lock-free audio thread processing. Cycle detection prevents feedback loops. 64-bit float summing bus for mix precision.