Drawmer OC1 500 Series Opto Compressor

Some sources demand transparent, natural dynamics rather than aggressive compression. The Drawmer OC1 opto compressor brings the smooth, musical response of optical compression to the 500 Series format while delivering the comprehensive control and sonic flexibility typically found in full-size Drawmer rack processors. Designed for vocals, acoustic instruments, stereo buses and countless other applications, the OC1 combines classic opto character with modern workflow features, harmonic enhancement and precision recall to give engineers exceptional control in a single 500 Series slot.

Optical Compression With Complete Dynamic Control

The OC1 provides a full professional control set including Input, Output, Threshold, Ratio, Attack and Release, allowing everything from transparent level control to more assertive dynamic shaping. Twenty-one-position detented controls make stereo matching and session recall fast and repeatable, while the dedicated Wet/Dry Mix control enables parallel compression without requiring additional routing. A Program mode automatically introduces a slower secondary release characteristic to minimize pumping and maintain a smooth, natural response during heavier gain reduction.

BIG, AIR and CRUSH Enhance Musical Character

Derived from Drawmer's acclaimed 1973 multiband compressor, BIG and AIR modes refine how the compressor responds across the frequency spectrum. BIG reduces sidechain sensitivity to low frequencies, preserving bass energy while minimizing unwanted pumping, while AIR maintains the openness and detail of vocals, cymbals and acoustic instruments throughout the compression process. Completing the signal path, CRUSH harmonic saturation adds analog warmth, subtle distortion and harmonic richness that can gently enhance a source or introduce more pronounced coloration as input levels increase.

Professional Features for Modern Studios

Stereo linking allows adjacent OC1 modules to operate together for consistent stereo compression, sharing gain reduction along with BIG, AIR, Threshold and Ratio settings across both channels. Comprehensive metering displays gain reduction as well as selectable input or output levels, while a hard-wire bypass provides instant comparison between processed and unprocessed signals. Designed and hand-built in the UK, the Drawmer OC1 delivers the smooth, musical response of optical compression with the precision, flexibility and reliability expected in today's recording, mixing and mastering environments.