GRACE DESIGN / m501

""High-quality microphone preamplifier module compatible with API 500 series""

■ Microphone Preamplifier

■ API 500 Compatible Module

~From the Manufacturer's Website~

The m101 has earned an unshakeable reputation as a high-quality single-channel microphone preamplifier. Its superior sound and design are now available for use with the VPR Alliance (API 500 compatible). GRACE design's unique ability to reproduce spatial detail with exceptional fidelity captures every nuance of the live sound.

Many microphone preamplifiers compatible with the API 500 series tend to have significant ""coloration,"" making the m501's natural and musical sound quality a ""long-awaited"" addition for many users. The m501 aims for a ""sound that captures everything"" without coloration or distortion, much like the lens of a top-of-the-line camera.

It features the same balanced transformerless design as the m101, a 75Hz high-pass filter, an instrument D.I. input, and of course, the popular ribbon microphone mode.

It is the most reliable and artistically superior microphone preamplifier for all microphones and sound sources.


Among the many unique compressors and EQs available in the API 500 compatible lineup, choosing the GRACE design m501 as a microphone preamplifier would be highly significant, as it would complement those other units with its clear and highly accurate reproduction of the original sound.

■ VPR Alliance (API 500 module compatible) compatible product

■ High-speed, musical transimpedance (current feedback) amplifier design

■ Fully balanced, transformerless XLR microphone input

■ High-impedance 1/4"" instrument input (DI input)

■ 12-position precision gold contact rotary switch gain control

■ Precision 0.5% metal film resistor for ultra-pure sound quality

■ 75Hz, 12dB/Octave high-pass filter

■ 2-color LED peak meter

■ LED indicator (48V, Ribbon Mode, HPF)

■ Ribbon microphone mode (ideal for dynamic microphones, optimized signal path)

■ Shielded gold contact relay for signal switching

■ High-performance active balanced output circuit

■ No electrolytic capacitors used in the signal path

■ Ultra-clean 48V phantom power

■ Minimized internal signal path

■ Made in USA