Audio Alchemy DPA-1M Monoblock Power Amp

“The DPA-1Ms were able to drive the Sabrinas to high levels with no evidence of strain. There was certainly nothing about the sound that screamed "class-D." In fact, had I been told that I was listening to a high-power class-AB amplifier—the kind that would require the help of a friend to lift it—I would have had no reason to doubt the truth of that statement. The DPA-1M's sound was fundamentally neutral, allowing recordings to be presented without editorializing in the form of emphasizing any part of the audioband; the music reproduced was left to speak for itself.”

https://www.stereophile.com/content/audio-alchemy-dpa-1m-monoblock-power-amplifier

“Perhaps the most salient characteristics of the DDP-1 and DPA-1M, however, were powerful rhythmic drive, wide dynamic expression, and rock-solid visceral grip in the bottom end. The timpani in “Mars” was taut, powerful, deep, and dynamic. Bass guitar had a solid feel that was simultaneously full and tight, combining timbral warmth and body with outstanding pitch definition and articulation. Kick-drum cut through the mix with a solid impact. Switching to the less powerful DPA-1 stereo amplifier, I heard no reduction in dynamic range, bass control, or bottom-end extension, at least driving the 94dB-sensitive Magico loudspeakers. (Less sensitive speakers may benefit from the monoblocks’ greater output power.) Both the stereo and the mono versions of this amplifier sounded like indefatigable powerhouses, with plenty of dynamic headroom. I never heard the amplifier soften the bass, harden textures, or congeal the soundstage, no matter what the playback level or how demanding the music.”

https://www.theabsolutesound.com/articles/audio-alchemy-ddp-1-preamplifierdacheadphone-amplifier-dpa-1-stereo-power-amplifier-and-dpa-1m-monoblock-power-amplifiers/?page=2

DPA-1M Monaural Power Amplifier
Output power: 325W into 8 ohms, 400W into 4 ohms
THD: 0.05%, 1W into 8 ohms
Input impedance: 100k ohms
Output impedance: 0.06 ohms
Gain: 20dB or 26dB (switchable)
Dimensions: 10.5" x 3" x 11.6"
Weight: 16 lbs. each
Price: $1995 each (new)

Package Dimensions

17.0" × 15.0" × 9.0" (13.0 lbs.)

17.0" × 15.0" × 9.0" (13.0 lbs.)