GRACE DESIGN / m801mk2

The m801mk2 is GRACE design's top-of-the-line 8-channel microphone preamplifier. Through meticulous circuit design and carefully selected components, it delivers exceptional performance not only in sound quality but also in noise reduction.

■8-Channel ""High-Fidelity"" Microphone Preamplifier

The m801mk2 is the culmination of GRACE design's over 25 years of refinement in creating microphone preamplifiers that capture every nuance of performance.

While inheriting all the highly acclaimed design features, such as the beautifully independent circuit board design for each of the 8 channels, the use of precision metal film resistors, gold contacts, and the elimination of electrolytic capacitors, the circuit design has been refined to pursue even greater heights. Many improvements have been achieved, including improved noise performance at low gain, improved low-frequency phase response, thorough countermeasures against electromagnetic noise such as RFI/EMI and Wi-Fi, and a clean DC power supply.

As a result, it achieves the ultimate flat and wide response with a frequency response of 3.2Hz-530kHz (± 3dB)*. It captures every nuance of performance, allowing you to record a sound with breathtaking depth and power.

The ""MODEL801,"" GRACE design's first 8-channel microphone preamplifier, was released in 1994. With its completely independent circuit board design for each channel, sophisticated metal film resistors and gold contacts, and the elimination of electrolytic capacitors, the MODEL 801 embodies a thorough design philosophy that prioritizes musical resonance above all else, without any compromise. Even after more than 25 years, it remains one of the most expressive microphone preamplifiers, still actively used in studios worldwide.

Twelve years later, to keep pace with the ever-evolving advancements in digital sound quality, the ""m801"" was released, featuring an expanded frequency response, superior signal path, and ribbon microphone mode. And now, the ultimate microphone preamplifier, the ""m801 mk2,"" has arrived, looking completely ahead to the next generation.

■Specifications

Preliminary Specifications / October 2018 (subject to change)



○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 <3°



○CROSSTALK

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



○IMPEDANCE

Input 8100Ω

Input, Ribbon Mode 20KΩ

Input, Pad Engaged 1.3KΩ

Output 150Ω



○DIMENSIONS

Weight 13lbs (5.9kg)

Height 2U

Width 19"" (482.6mm)

Depth 10"" (254.0mm)



○POWER CONSUMPTION

100-240VAC 50/60Hz 40 Watts max