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Grace Design m102 Single-Channel Optical Compressor

B&H # GRAM102 MFR # AM102
Grace Design m102 Single-Channel Optical Compressor


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Ship Time: 7-14 business days 
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Product Highlights

  • Professional Single-Channel Compression
  • Optical Attenuator Compressor Circuit
  • Balanced XLR & 1/4" TRS Inputs / Outputs
  • Stereo Link / Sidechain Input
  • Compact & Durable Construction
  • Straightforward Comprehensive Controls
  • Bright Peak LED Meter
  • Quiet Internal Power Supply
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You Pay: $685.00

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The Grace Design m102 Single-Channel Optical Compressor is a half-rack unit intended for professional, project and home studios. The m102's optical attenuator circuit is designed to deliver natural and musical control over dynamics, allowing for subtle or heavy compression without affecting the integrity of the source signal.

The m102's front panel features straightforward controls that include threshold, attack, release and ratio, as well as input and output level dials. It also has an LED level meter with peak indicator and a three-position power/out/in switch. Finally, another three-position switch allows you to toggle between normal compressor mode, sidechain mode for using an external signal to trigger the compressor, and stereo link mode for linking compressor controls with another m102 for stereo use.

On the rear panel there are balanced XLR and 1/4" TRS phone inputs and outputs along with a sidechain/stereo link input for either accepting a sidechain signal or connecting with another m102. The m102's compact, laser-etched construction features a quiet internal power supply and rugged chassis.

Bright 10-segment LED gain reduction meters
Bi-color output peak LED lights green with signal present and red 8dB before clipping
Dual balanced inputs and outputs on XLR and 1/4" TRS
Precision audio path with 0.5% precision metal film resistors
Laser-etched black anodized front panel
Built-in universal power supply
Five-year transferable warranty on parts and labor
Made in the USA
Gain Range Input Trim: -10 - +10dB
Output Trim: -10 - +10dB
Compression Threshold: -15 - +15dBu
Attack: 3 - 200 ms
Release: 0.03 - 3s
Ratio: 1:1 - 12:1
Gain: 0 - 20dB
THD 1kHz, 22Hz-22kHz BW:
@ 0dB Gain +10dBu out: < 0.002%
Intermodulation Distortion @ 0dB Gain +20dBu out:
SMPTE/DIN 4:1 7kHz/50Hz: < 0.007%
Output Noise 22Hz-22kHz BW: 0dB Gain: < -84dB
CMRR @0dB Gain, 3.5Vcm:
100Hz: > 75dB
1kHz: > 75dB
10kHz: > 75dB
Frequency Response @0dB Gain -3dB: 0.016Hz-150kHz
Impedance Line in: 24kΩ
Main out balanced: 350Ω Main out unbalanced: 150Ω
Link on - side chain mode: 100kΩ
Meters Output peak indicator: Green: -15dBu / Red: +20dBu
Gain reduction meter: 0 -10dB Gain Reduction
Maximum Output Level 100k Ohm load, 0.1% THD: +26dBu
Power Supply Power consumption: 100-240VAC
Electrical rating: 100-240V~ 50-60Hz 14W
Mains supply voltage fluctuations are not to exceed ±10% of the nominal supply voltage.
Temperature Operation temperature range: 10 to 40 °C (50 to 104° F)
Storage and transportation temperature range: -40 to 70 °C (-40 to 158° F)
Dimensions (HxWxD) 1.7 x 8.5 x 9.0" (4.3 x 21.6 x 22.8cm)
Weight 2.4 lb (1.1 kg)
Grace Design m102 Single-Channel Optical Compressor
  • AC Power Cable
  • 4 x Adhesive Rubber Feet
  • Machine Screw #10-32 x 3/8
  • Owner's Manual
  • 5-Year Manufacturer Warranty
  • Be the first to review this item


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