PS Audio BHK Signature Power Amplifier

The vacuum tube input stage provides the warmth, texture, and harmonic richness often associated with tube gear, while the high-bias MOSFET output stage delivers the raw power and control needed to drive demanding speakers. This combination ensures you get the delicate musical detail of tubes alongside the authority and transient speed of solid-state amplification.

Yes, the BHK Signature 300 is exceptionally capable with difficult loads. It is rated to deliver 300 watts into 8Ω, 600 watts into 4Ω, and up to 1,000 watts into 2Ω, meaning it can handle almost any loudspeaker impedance curve with ease.

While the amplifier features both RCA and XLR inputs, the design is fully balanced. Using the XLR balanced inputs will provide the best noise rejection and signal integrity, especially if your preamplifier also offers a true balanced output.

Each monoblock weighs 83 lbs and measures 17.1” wide by 8.7” high. You should account for a depth of at least 15 inches to accommodate the rear connectors and ensure adequate ventilation for the chassis.

Yes, the BHK Signature 300 includes a 12-volt trigger input. This allows you to automatically power the amplifiers on or off in sync with your preamplifier or processor.

The input tubes are designed for long-term reliability, but like all vacuum tubes, they will eventually require replacement. The unit uses through-hole construction, which makes the internal components, including the tubes, accessible for maintenance by a qualified technician when the time comes.