Perreaux PMF1050 Power Amp

At a Glance

The PMF1050 was made in 1985 in New Zealand. It delivers 100 watts RMS per channel into 8 ohms — stepping up to 160 watts into 4 ohms — with the same Class A driver stage feeding an Extended Class AB output section that defines the PMF series character. Front panel includes a headphone socket rated for 8 ohm or higher headphones, and 3 switches: power; speaker A; speaker B. Dimensionally it is 17"W x 3.5" tall — a slim two-rack-unit profile — weighing in at 27 lbs. Measured specs are strong: THD = 0.03% from 0.25W all the way to rated output, a noise floor 100dB below rated output, a damping factor above 500, channel separation better than 60dB across the full audio band, and bandwidth that stretches to 300kHz. The amplifier saturation point exceeds 250 watts per channel into 8 ohms, giving it meaningful dynamic headroom — 2.0dB above rated power with music — which matters more in real listening than the continuous wattage rating suggests. This amp sounds like butter, smooth and rich without coloration or harshness. It plays very loud without clipping (headroom). Some minor marks keep it below mint condition but it's perfect electrically and the original box, manual, and hand-checked tag all included.Read More