“ What is it? The Grace Design m903 reference headphone amp / DAC is a device that is typically used in audio production / audiophile setups to take one audio source and give life to some other audio device. In my case I let it drive my HD-650 headphones with stock cable. Here are a few things to note prior to reading any further. My headphones have been fully burned in for over...” --NA Blur
“ I write this as a regret selling it off... It really gave me the most thrilling headphone experiences I have had - together with my HD650's that is. With Beyer T1 it was too bright. But I think I am exceptionally sensitive to brightness. My friend loved the combo (m902 + T1), so don't take my word for it. Anyway - be careful if you are sensitive to brightness in...” --ardilla
“I was looking for a step up from PA2V2, admirable though it is and fond though I am of it. I listened to a friend's Headroom Maxed Out Home Amp that showed what I was missing because of the PA2V2. I got this m901 used. I generally feed unbalanced analog sources and am happy that I can distinguish between my various disc spinners. Using the coaxial digital input from a Sony DVP...” --bajjisw
Professionals and audiophiles alike will be floored by the high-performance 24-bit/192kHz DAC, which includes a unique s-Lock dual-stage PLL (Phase Lock Loop) for extremely low intrinsic jitter and rock-solid digital performance. A full set of analog and digital inputs are available, all of which are selectable via a front panel rotary switch. At the core of the m902 is meticulously designed,...
"Pretty Miraculous" The m902 reference headphone amplifier from Grace Design is built upon the remarkable success of the companys venerable model 901, with the addition of many new and essential features. It is designed to be an invaluable tool for any critical audio application for which reference quality headphone amplification is required. A trio of Stereophile critics all...