Grace Design M101

Maintaining Grace Design pedigree throughout, the m101 employs our balanced, transformerless, transimpedance circuit topology. With incredible bandwidth and headroom, the m101 is natural, musical and detailed, allowing engineers and musicians to consistently record vibrant, amazing tracks.

The m101 is equipped with our new universal switching power supply, which is dead quiet and accepts input voltages from 100 to 240VAC. The front panel is a tough black anodized / laser etched black, which ensures legibility and usability in varying light conditions. And all preamp functions have a dedicated indicator LED, including the 48V phantom power and HPF switch.

Built in as standard is our unique Ribbon Mic Mode, which bypasses the input decoupling capacitorss, raises the input impedance from 8.1kΩ to 20kΩ, and defeats the 48V phantom power, preventing damage to delicate ribbon mic elements. Ribbon mics, you’re welcome.

Grace Design M101 FEATURES

Fast and musical transimpedance architecture
Updated audio path with 0.5% precision metal film resistors
New 12 position gold plated rotary gain switch
High performance output line driver amplifier and HPF amplifier
New Ribbon mic mode (also great for dynamic mics)- Relay bypass of phantom power decoupling capacitors, increased
input impedance, and 48V lockout
Wider 10-75dB gain range
Enhanced RFI interference suppression
Three output connectors: XLR balanced, TRS balanced and ¼” unbalanced
Bombproof laser-etched black anodized frontpanel
Sealed gold contact relay for Hi-Z input switching
Built in power supply / no wall-wart!
Led indicators for 48V, Ribbon mode, and HPF
Five year warranty on parts and labor
Made in the USA

Grace Design M101 SPECIFICATION

GAIN RANGE (5DB STEPS)
Mic input 10-65dB
Hi-Z input -10-45dB
Output trim control 0 to 10dB

THD N
@ 20dB Gain 20dBu out <0.00085%
@ 40dB Gain 20dBu out <0.0010%
@ 60dB Gain 20dBu out <0.0050%

INTERMODULATION DISTORTION
@ 40dB Gain 20dBu out
SMPTE/DIN 4:1 7kHz/50Hz <0.0020

NOISE – REFERRED TO INPUT
50Ω source <-130dB
150Ω source <-128dB
600Ω source <-124dB CMRR 100Hz >68dB
1kHz <75dB
10kHz <65dB

PHASE DEVIATION (HPF OFF)
50Hz-25kHz <6 degrees

FREQUENCY RESPONSE
Mic input @ 40dB Gain -3dB 4.5Hz-390kHz
Mic input @ 40dB Gain -0.5dB 10.5Hz-140kHz
Hi-Z input @ 20dB Gain -3dB 2.5Hz-195kHz
Hi-Z input @ 20dB Gain -0.5dB 6Hz-74kHz

IMPEDANCES
Mic input 8.1kΩ
Mic input, Ribbon mode 20kΩ
Hi-Z input (unbalanced) 1MΩ
Hi-Z input (balanced) 2MΩ
Balanced Outputs 300Ω
Unbalanced Outputs 150Ω

PEAK LED METER
Green Threshold -14dBu
Red Threshold 16dBu

MAXIMUM OUTPUT LEVEL
100k Ohm load, 0.1% THD 25dBu

WEIGHT AND DIMENSIONS
2.4 lbs H1.7” x W8.5” x D9.0”
1.09 kg H4.3cm x W21.6cm x D22.8cm

POWER COSUMPTION
100-240VAC 5 Watts Max