PS Audio PMG Signature M800 Monoblock Power Amplifier (Sold as a Pair)

PS Audio PMG Signature M800 Monoblock Power Amplifier

PS Audio has been designing and building amplifiers for half a century. Every one has been a step toward sonic perfection — each teaching us something the last could not: about power supplies, about feedback, about the quiet ways an amplifier can color the music it carries. The M800 is where that road arrives.

Eight hundred watts into 4 ohms, doubling cleanly down from 400 into 8 — decisive, effortless, never strained.

But power was never the hard part. Speed, evenness, and restraint were. The M800 is the first amplifier we've built to hold all three at once.

Its slew rate exceeds 200 volts per microsecond. Hand it a 10 kHz square wave — the cruelest signal in audio — and it returns vertical edges and flat tops, no overshoot, no ringing. In fifty years we have never seen one this perfect. Distortion stays flat and low across the entire audible band, never trading one frequency for another. And it does all of this with strikingly low overall feedback — no heavy correction, just the music. Remarkable.