Grace Design m801mk2 8-Channel Microphone Preamplifier
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In 1994, Grace Designs released the Model 801 microphone preamplifier- their first production model. It set a new standard of sonic quality and reliability for microphone preamplifiers, providing much better performance than the built-in circuits in the recording consoles of the day. It featured independent circuit boards for each channel, gold contact rotary gain controls wired with precision metal film resistors, a musical sounding transimpedance (current feedback) gain stage, gold contact sealed relay signal switching, and there were NO electrolytic capacitors in the signal path.
12 years later, Grace Designs has released the next generation of this preamplifier: the m801, which refined the design features of the previous version, and added a fully differential signal path and Ribbon Mic mode, which optimized the signal path for low output ribbon microphones.
Now 20 years later, the next generation is here: the m801mk2. Newly designed amplifier circuitry adds to the features of the previous versions while significantly improving noise performance at low gains, increasing low frequency bandwidth for improved phase response, improving RFI/EMI immunity for today's ever noisier world, and eliminating the external DC power supply for a cleaner, simpler design.
Today's modern recording studio is invariably loaded with incredible sonic processing capability, making the opportunity to add great sounding color routine. But capturing the magic at the front end is still the job of skillfully designed analog hardware, for which there is no substitute. If your source sounds great and your mic is plugged into the m801mk2, you'll be rewarded with a recording of breathtaking depth and realism. If you choose to colour it up from there, you'll be starting with the best possible raw material you can get.
Specifications
FREQUENCY RESPONSE
@ 20dB gain +/- 3dB 150Ω source: 3.2Hz-530kHz
@ 20dB gain +/- 0.2dB 150Ω source: 14.8Hz-109kHz
@ 40dB gain +/- 3dB 150Ω source: 3.2Hz-500kHz
@ 40dB gain +/- 0.2dB 150Ω source: 15.4Hz-103kHz
THD+N 22-22KHZ
@ 20dB gain +20dBu out, 1kHz: < .0004%
@ 40dB gain +20dBu out, 1kHz: < .0008%
@ 60dB gain +20dBu out, 1kHz: < .0070%
INTERMODULATION DISTORTION
@40dB gain +20dBu out:
SMPTE/DIN 1:1 (50Hz, 7kHz): < .0015%
SMPTE/DIN 4:1 (50Hz, 7kHz): < .0020%
NOISE REFERRED TO INPUT
@60dB gain 50Ω source: -130dB
@60dB gain 150Ω source: -127dB
@60dB gain 600Ω source: -123dB
PHASE DEVIATION
100-20KHz @40dB gain: < 3⁰
CROSSTALK ANY CHANNEL
Any Channel @40dB gain 1kHz: -140dB
Any Channel @40dB gain 10kHz: -130dB
CMRR
@60dB gain, 3.5Vcm, 1KHz: > 85dB
@60dB gain, 3.5Vcm, 10KHz: > 75dB
PHANTOM POWER
Voltage +48V: +0.9/ -0.0
6.8kΩ resistor match tolerance: +/- 0.1%
MAXIMUM OUTPUT LEVEL
1kHz, 100KΩ load: +28dBu
IMPEDENCE
Input: 8100Ω
Input, Ribbon Mode: 20kΩ
Input, Pad Engaged: 1.3KΩ
Output: 150KΩ
DIMENSIONS
Weight: 13lbs (5.9kg)
Height: 2U
Width: 19"
Depth: 10"
POWER CONSUMPTION
100-240VAC 50/60Hz: 40 Watts max
Q & A
Reviews
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- Performance Guarantee: Normal wear and tear is covered, so your product will be performing as well as the day you purchased it for the entire duration of the coverage. Band and Orchestral Performance Warranty does not include replacing pads or cleaning for woodwind instruments, unless deemed necessary by our repair staff. Ultrasonic cleaning for brass instruments will be provided if deemed necessary by our repair staff, but is not routinely offered under the Performance Warranty.
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| Product | SKU | Qty |
|---|---|---|
| m801mk2 8-Channel Microphone Preamplifier | 759530 |
