The S400 is the PMG Signature Series in stereo form. Two channels of 200 watts each into 8 ohms, doubling into 4, drawn from the same state-of-the-art active power supply that drives the M800. The same Class A bias of 50 watts per channel keeps both channels in the most linear region of operation for 99% of normal listening. The same bandwidth beyond 500 kHz, the same flat distortion across the audible band, the same strikingly low overall feedback.A single chassis. A single power cord. Two channels of reference-quality amplification.The S400 exists for the listener who wants the entire Signature Series experience without two boxes, two power cords, and two sets of cables on the floor. Nothing in the topology has been pared back. The chassis is the only thing that changed.Designed by Darren Myers. Engineered into production by Bob Stadtherr. Hand built in Boulder, Colorado.
