Endorphin.es Golden Master 1U
Stereo multi-band mastering processor (EQ + Compressor + Mid/Side) in 22HP 1U Intellijel format.
22 HP Eurorack module
Golden Master 1U is the 1U sibling of Endorphin.es' Golden Master — a stereo multi-band mastering processor combining EQ, multi-band compression, and Mid/Side stereo processing. All three processing layers run simultaneously: the Mode button just selects which the three band knobs (LOW/MID/HIGH) are currently editing. Each band has a Mute button that doubles as a compressor enable on long-press. A brickwall limiter on the output with 1.5 ms look-ahead keeps levels safe. The 1U adds rear AUX IN, MIX OUT, and a 6-pin balanced line out for direct routing into Intellijel performance cases.
Features
- Multi-band stereo mastering processor: EQ + Compressor + Mid/Side, all running simultaneously
- Three frequency bands with crossovers at ~300 Hz and ~3 kHz
- Asymmetric cut/boost: -20 dB CCW, +8 dB CW (DJ-mixer style) in EQ mode
- Five-step compressor preset per band, morphed by the same band knob (when in Compressor mode)
- Per-band Mid/Side stereo width control (Mid/Side mode)
- Brickwall limiter on the output with 1.5 ms look-ahead
- 16-bit 96 kHz audio I/O with 32-bit internal processing
- Per-band Mute (short press) + Compressor Enable (long press) buttons
- RGB Mode LED + 4 yellow VU/clip LEDs (2 per L/R)
- Mono normalling: In 1 routes to both channels when In 2 unpatched
- Pseudo-balanced TRS outputs (DI-box style noise cancellation)
- VCA CV input (0 to +5 V) for output volume modulation
Controls & Jacks (19)
- In 1
- In 2
- Low Band
- Mid Band
- High Band
- Low Mute
- Mid Mute
- High Mute
- Mode
- VCA CV
- Mode LED
- R Level LED
- R Clip LED
- Out 1
- Out 2
- Input Gain
- Volume
- L Clip LED
- L Level LED
How-To Guides
- EQ a stereo master bus
- Enable per-band compression
- Mid/Side stereo widening
- Sidechain duck via VCA CV
- Live performance band-muting
Explore the interactive Golden Master 1U panel on BleepDex — tap any control to learn what it does.