The Grace Design m102 Optical Compressor takes the sonic performance characteristics from the compressor section of the Grace Design m103 Channel Strip.
The unit is based on an optical attenuator, the purest high fidelity gain control mechanism available, and provides gentle limiting to fairly aggressive compression while remaining neutral and transparent.
Housed in a 1U, half-rack enclosure, the single channel m102 sports a familiar and elegant industrial design that was derived from the Grace Design m101 Microphone Preamp. Front panel controls include +/- 10dB of input and output level on rotary pots that allows for fine tuning of gain settings. Four additional pots allow the user to control Threshold, Attack, Release and Ratio settings. A three position switch selects Normal operation and the added ability to Link two m102 units for stereo compression or to select a Sidechain input for frequency dependent compression. A 10 segment LED array displays gain reduction levels, and a bi-color LED is provided for signal presence and peak detection. The rear panel includes an AC inlet for the built in universal power supply, XLR and ¼" TRS balanced input and output connections, and a ¼" jack used for linking two m102's or for use as a side-chain input.
Elegantly simple, purist feedback design optical compressor, optimized for signal leveling with a minimum of sonic artifacts
From subtle dynamic control to heavy compression, the sonic character of the source remains intact
Comprehensive control set includes input level, threshhold, attack, release, ratio and makeup gain
Bright, easy to read 10 segment LED gain reduction meters
Bi-color output peak LED lights green with signal present and red 8dB before clipping
(m102) dual balanced inputs and outputs on XLR and 1/4" TRS
Precision audio path with 0.5% precision metal film resistors
Bombproof laser-etched black anodized frontpanel
(m102) Built in universal power supply
Input Trim : -10 - +10dB
Output Trim : -10 - +10dB
Threshold Range : -15 - +15 dBu
Attack Range : 3 - 200 ms
Release Range : 0.03 - 3 s
Ratio Range : 1:1 - 12:1
Gain Reduction : 0 - 20dB
THD+N 1kHz, 22Hz-22kHz BW
@ 0dB Gain +10dBu out : <0.002%