Grace Design m801 MKII Microphone Preamp

Grace Design

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Product Code: 9999-05994
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The Grace Design m801 MKII Microphone Preamp is a powerful stroke of the brush in opening the character of a recording project. Unparalleled depth, a sweet and clean character, and exciting transfer of performance, makes the m801 MKII a multi-channel microphone preamp worthy of the Grace Design name.

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. This makes the Grace Design m801 MKII Microphone Preamp more relevant than ever. If your source sounds great and your mic is plugged into the Grace Design m801 MKII, you’ll be rewarded with a recording of breathtaking depth and realism. If you choose to color it up from there, you’ll be starting with the best possible raw material you can get.

The new amplifier circuitry adds again to the host of top of the line features of the Grace Design m801 MKII by 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. The new, carefully designed universal switch mode power supply is quiet, light and conveniently operates on mains voltages from 100-240VAC.

Grace Design m801 MKII Microphone Preamp Features

  • Front Panel Controls
    • 24 Position gold contact gain switch
    • Bi-color LED peak indicator
    • 48V Phantom power switch
    • Phase reversal switch
    • -20 Pad switch
    • Ribbon mic mode switch
  • Rearpanel Connections
    • IEC Power input, fuse holder and power switch
    • XLR Mic input connector
    • Parallel XLR output connector

Grace Design m801 MKII Microphone Preamp Specifications

  • Frequency Response:
    • @ 20dB Gain ± 3dB 150O Source: 3.2Hz-530kHz
    • @ 20dB Gain ± 0.2dB 150O Source: 14.8Hz-109kHz
    • @ 40dB Gain ± 3dB 150O Source: 3.2Hz-500kHz
    • @ 40dB Gain ± 0.2dB 150O 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 50O Source: -130dB
    • @60dB Gain 150O Source: -127dB
    • @60dB Gain 600O Source: -123dB
  • Phase Deviation:
    • 100-20KHz @40dB Gain: <3°
  • 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
    • 6.8kO Resistor Match Tolerance: +/- 0.1%
  • Maximum Output Level:
    • 1kHz, 100KO Load: +28dBu
  • Impedance:
    • Input: 8100O
    • Input, Ribbon Mode: 20kO
    • Input, Pad Engaged: 1.3KO
    • Output: 150KO
  • Weight & Dimensions:
    • Weight: 13lbs (5.9kg)
    • Height: 2U
    • Width: 19?
    • Depth: 10?
  • Power Consumption: 100-240VAC 50/60Hz, 40 Watts Max

Grace Design m801 MKII Microphone Preamp Includes

  • Grace Design m801 MKII Microphone Preamp
  • AC Power Cord (6 Feet)
  • Owners Manual
  • 20 Year EON Limited Warranty

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What We Think


The Grace Design m801 has been a mainstay 8-Channel microphone preamplifier for the discriminating recordist for over 15 years and counting. It's sound errs on the clean side of things, but it's important to note that Grace Design preamps are certainly not boring. There is a real life and sweetness to what you get in the end. When recording, the goal is obviously to assemble the best sounding tracks that you can that gel together without much fuss when it comes time to mix. This is something that the m801 accels at beautifully. The m801 is right at home for the recording of classical music. Combine with some Sennheiser MKH-series microphones and you're well on your way. And if you love ribbon microphones, the m801 features a Ribbon Mode that sets the nominal input impedance to 20 kOhms, effectively providing the proper environment for ribbon microphone signal to open up and breathe within, while providing the additional benefit of increased level that ribbons will often need. Again, this is a wholly sweet sounding preamp whose use shouldn't be limited to 'precious' musical styles. While it's not another Neve clone, it's a clean-character preamp that can unveil the true character of a drum kit that a professional drummer may have honed over many years - why gum that up with a 'thick' preamp? We feel that this is a tool worth serious consideration if you're after the kind of quality of build and sound that Grace Design has become synonymous with over the years.

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