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Grace Design M502 500 Series Opto Compressor

B&H # GRAM502 Mfr # AM502
Usually ships in 7-14 business days

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This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

Free Standard Shipping
Not eligible for free Expedited Shipping
You Pay: $625.00

From gentle dynamic smoothing to full tilt squash, the M502 500 Series Opto Compressor from Grace Design delivers open, musical dynamic control that is a suitable companion to high-fidelity mic preamplifiers or any recording chain. All your tracks can have glorious, easy-to-use compression which regardless of how much you squeeze, will always end up with their sonic essence intact. This unit is built in a 500 series rack module.

The heart of the compressor circuit is an optical attenuator. With careful attention to control circuit design, the Opto Compressor not only provides a wide range of dynamic control, but also remains neutral, open, and musical.

This fully featured unit includes input and output level, threshold, attack, release, and ratio controls. The M502 Opto Compressor includes connectivity for sidechain input, stereo linking, and even the Radial Workhorse Bussfeed.

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, threshold, attack, release, ratio, and makeup gain
Bright, easy-to-read 10-segment LED gain reduction meter
Bi-color output peak LED lights green with signal present and red 8dB before clipping
Circuit board header / connector for stereo linking
Connections for sidechain, stereo linking, and Radial Workhorse Bussfeed
Precision audio path with 0.5% precision metal film resistors
Bombproof, laser-etched black anodized front panel
Made in USA
Gain Range Input Trim: -10, 0, +10 dB
Output Trim: -10 to +10 dB
Compression Threshold Range: -15 to +15 dBu
Attack Range: 3 to 200 ms
Release Range: 0.03 to 3 s
Ratio Range: 1:1 to 12:1
Gain Reduction: 0 to 20 dB
THD + N At 0 dB Gain +10 dBu out: <0.002% (1 kHz, 22 Hz to 22 kHz BW)
Intermodulation Distortion At 0 dB Gain +20 dBu out: <0.007% (SMPTE/DIN 4:1 7 kHz/50 Hz)
Output Noise At 0 dB Gain: <-84 dB (22 Hz to 22 kHz BW)
CMRR At 0 dB Gain, 3.5 Vcm: 100 Hz/1 kHz/10 kHz: >75 dB
Frequency Response At 0 dB, Gain -3 dB: 0.016 Hz to 150 kHz
Impedance Line In: 24 kΩ
Main Out balanced: 350 Ω
Main Out unbalanced: 150 Ω
Link In - sidechain mode: 100 kΩ
Level Meters Output Peak Indicator: Green: -15 dBu, Red: +20 dBu
Gain Reduction Meter: 0 to 10 dB Gain Reduction
Maximum Output Level At 100 kΩ load, 0.1% THD: +26 dBu
Power Consumption 120 mA maximum, current required from +16 V and -16 V power supplies
Dimensions (H x W x D) 5.25 x 1.50 x 6.60" (13.30 x 3.80 x 16.70 cm)
Weight 0.7 lb (0.31 kg)
Grace Design M502 500 Series Opto Compressor
  • Limited 5-Year Transferable Warranty on Parts & Labor
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