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181053000000000

Grace Design M101 Microphone Preamp

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In 2000, the Grace Design model 101 microphone preamp helped fuel a revolution. When people took professional recording into their own hands, it was ...Click To Read More About This Product

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OVERVIEW

Single-channel, ultra wide-bandwidth preamp with special ribbon mic mode provides remarkable transparent audio quality.

In 2000, the Grace Design model 101 microphone preamp helped fuel a revolution. When people took professional recording into their own hands, it was there with all of the quality and performance of a high-end mic preamplifier, but with a price that made it available to the masses. Eight years later, and the cause moves forward with the newly redesigned m101 preamp.

Maintaining Grace Design pedigree throughout, the m101 employs 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 a redesigned universal switching power supply that's dead quiet and accepts input voltages from 100 to 240V AC. 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 Grace's unique Ribbon Mic Mode, which bypasses the input decoupling capacitors, raises the input impedance from 8.1kÎ to 20kÎ, 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 of pro audio gear for everyone from home recording enthusiast to top professional.

Note: For a truly outstanding sound and value, we suggest using the Grace m1011 with the CAD e300 condenser mic (see (#271261) for amazingly clear and detailed, yet warm-sounding vocals.

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
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 1/4" unbalanced
Bombproof laser-etched black anodized front panel
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
SPECIFICATIONS
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
50 Ohm source: <-130dB
150 Ohm source: <-128dB
600 Ohm source: <-124dB

CMRR
100Hz: >68dB
1kHz: >75dB
10kHz: >65dB

PHASE DEVIATION (HPF off)
50Hz-25kHz: <6

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

IMPEDANCE
Mic input: 8.1kOHM
Mic input, Ribbon mode: 20k Ohm
Hi-Z input (unbalanced): 1M Ohm
Hi-Z input (balanced): 2M Ohm
Balanced Output: 300 Ohm
Balanced Output: 150 Ohm

PEAK LED METER
Green threshold: -14dBu
Red threshold: +16dBu

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

WEIGHT and DIMENSIONS
2.4 lb. H1.7" x W8.5" x D9.0"
1.09 kg H4.3cm x W21.6cm x D22.8cm

POWER CONSUMPTION
100-240V AC: 5 Watts Max
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