M101 MICROPHONE PREAMPLIFIER
m101
ONE. PERFECT. CHANNEL.
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.
The gain range is 10-75dB, including the additional +10dB of gain available with the output trim control. This provides ample gain for use of any type of microphone in any recording situation. The gain control is a precision gold plated 12 position switch and the circuit path is built with 0.5% metal film resistors.
Included is a HI-Z input on the front panel. Rear panel I/O options include both balanced TRS and unbalanced TS 1/4” outputs, along with the standard XLR balanced out and XLR microphone in.
Equally at home amplifying a vintage condenser mic or a plugged-in acoustic guitar, the m101 delivers the kind of high fidelity performance previously available only to big budget recording studios and Grammy winning musicians. Add it all up while considering that the price is unmatched and the picture becomes pretty clear – the m101 is one little hot rod piece
THE GRACE DESIGN EON AND STANDARD WARRANTIES
We back up everything we make with either our unrivaled 20 year EON limited warranty, or the 5 year standard limited warranty. These represent the best coverage in the business and prove our commitment to the quality, serviceability and long term value of Grace Design products.
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
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 outS
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
All specifications subject to change without notice.