Overview

The Grace Design m101 is a single-channel microphone preamp that represents the pinnacle of transparent, uncolored preamplification, designed for engineers and recordists who want to capture the purest possible representation of their microphone and source without any tonal alteration. The m101 uses a fully balanced, transformerless signal path with proprietary transimpedance amplifier topology that achieves extraordinarily low noise, vanishingly low distortion, and a ruler-flat frequency response from below 10Hz to above 100kHz. This transparent approach means the preamp adds nothing to the signal, revealing every nuance of the microphone and source with startling clarity and three-dimensional depth. The preamp offers up to 75dB of gain in precise 1dB steps through a ribbon-type gain control, with continuously variable trim for fine adjustment. A unique ribbon controller provides smooth, detented gain adjustment. The front panel includes 48V phantom power, a 20dB pad, polarity inversion, and a high-pass filter, along with a detailed multicolor LED meter. The build quality is exceptional with precision machining, premium components, and assembly at Grace Design's facility in Colorado. An optional A/D converter module adds high-resolution digital output. The m101 is ideal for classical recording, acoustic music, and any application where sonic transparency is paramount. The deliberately uncolored character may seem clinically neutral to engineers who prefer the warmth and harmonic richness of transformer-based designs, and the premium price is substantial for a single-channel unit.

Preamps

The pinnacle of transparent preamplification with transformerless topology achieving extraordinarily low noise and ruler-flat response, designed for capturing the purest possible representation of any source.

Instrument Details

$1,075 Professional
Brand Grace Design
Type Transparent Microphone Preamp
Made In United States
Year 2006
4.8 1 vote

AI Reviews

4.8 /5

The m101 is the antithesis of the 'vintage mojo' trend, offering a surgical level of clarity that has made Grace Design a staple in high-end studios. Its transimpedance circuit architecture delivers an incredibly fast transient response and a floor-level noise specification that makes it ideal for capturing the delicate nuances of acoustic instruments or high-resolution vocal sessions.

The standout feature is undoubtedly the dedicated Ribbon mode. By bypassing the input decoupling capacitors and increasing the input impedance, it breathes life into passive ribbon microphones, providing the necessary gain without the hiss associated with lesser preamps. The build quality is exemplary; the 12-position gold-plated rotary gain switch provides satisfying, repeatable steps, which is a massive plus for precise stereo matching if you pair two units for overheads or room mics.

While some might find its 'wire with gain' philosophy too clinical for already sterile digital environments, it's an essential tool for engineers who prioritize accuracy over coloration. It doesn't hide flaws, but it reveals the true character of your microphone collection. At this price point, you are paying for precision engineering and US-made reliability. It's a professional workhorse that will likely outlast most of the gear in your rack, making it a sound investment for serious tracking.

Category Ratings

Preamps
4.8
Feb 15, 2026
AI-Generated Review Generated via Google API. This is an automated evaluation, not a consumer review. Learn more
Grace Design m101 Screenshot

Added: Feb 14, 2026

gracedesign.com/products/m101

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