Grace Design M-201 (1990s–2000s)

The M-201 shows up in the record as two overlapping product lines: the original 201 microphone preamplifier and its later successor, the m201. EQ Magazine (June 1997, p.78) looked at the 201 and reported input-referred noise of 130 dB at 60 dB of gain, frequency response of 15 Hz to 200 kHz +0/‑3 dB, and maximum gain of 60 dB. It came with a five-year warranty. The review also noted a memo strip for wet- or dry-erase markers, handy when running all eight channels at once.

By 2007, Grace had redesigned the unit as the m201. Mix Magazine (May 2007, p.97) called it “the redesigned successor to the venerable model 201,” and promised massive headroom, ultra-wide bandwidth, and a “distinctly musical” character, with an input mode switch on each channel. The m201 later got an onboard A/D converter variant. An internal Grace email quoted in Mix Magazine (August 2011, p.27) called the m201 A/D “the biggest sonic improvement I have heard in my studio for as long as I can remember.” The available sources don't record original pricing or total production years. The range from the EQ review to the 2011 internal note suggests a production span of at least fifteen years.