PS Audio BHK Signature 300 monoblock power amplifier Specifications

Sidebar 1: Specifications

Description: Hybrid tube/transistor monoblock amplifier. Tube complement: two hand-matched 6922/6DJ8. Input connections: single-ended (RCA), balanced (XLR). Speaker binding posts: 2 pairs, gold-plated copper. Output power: 300W into 8 ohms (24.8dBW), 600W into 4 ohms (24.8dBW), 1000W into 2 ohms (24dBW). Frequency response: 10Hz–20kHz, ±0.1dB; 10Hz–200kHz, +0.1/–3.0dB. Voltage gain: 30.5dB, ±0.5dB. Sensitivity: 1.2V. Damping factor: >350 (8 ohms, up to 1kHz). Output impedance: 0.1 ohm at 50Hz, 2.8V RMS. Input impedance: 200k ohms balanced, 100k ohms unbalanced. THD: <0.01%, 1kHz, 1W/8 ohms; <0.1%, 20Hz–20kHz, 1W/8 ohms; <0.1%, 1kHz, 200W/8 ohms (120VAC mains input); <0.1%, 1kHz, 400W/8 ohms (120VAC mains input). Signal/noise: <–85dBV, 100Hz–20kHz. Power consumption: 75W at ready, 175W at idle, 850W at rated power into 8 ohms, 1600W at rated power into 4 ohms.
Dimensions: 17.1" (434mm) W by 8.7" (221mm) H by 14" D (355mm). Weight: 83 lbs (37.7kg) net, 92 lbs (41.8kg) shipping.
Finishes: Black, Silver.
Serial numbers of units reviewed: NPWA-A1-5G0062, '5G0063.
Price: $14,998/pair. Approximate number of dealers: 60. Warranty: 3 years; tubes, 1 year.
Manufacturer: PS Audio, 4826 Sterling Drive, Boulder, CO 80301. Tel: (720) 406-8946. Fax: (720) 406-8967. Web:

PS Audio
4826 Sterling Drive
Boulder, CO 80301
(720) 406-8946

K.Reid's picture

Mike, great write up. You mentioned the hum problem, but it is not clear how you eliminated it. Please clarify. Also, you express that the deepest bass was not spectacular in comparison to your 6 figure price tag reference monoblocks. In your opinion, what choices did Bascom King make in the design of his amp that led you to conclude that the extreme deep bass performance was less than world class say in comparison to Soulution, dartzeel and Constellation.

Audiophileman's picture

Hi Michael I just finished reading the review of the BHK-300. I have the Goldenear Triton Ones. I am looking to buy this amp, or the Parasound JC1 monoblocks. You reviewed both amps, I know the JC1, was back in 2003. I highly value your opinion. What amp would you buy to pair up with the Triton Ones today? Thanks for the help.

w1000i's picture

Try Benchmark AHB2

liton2k's picture

I would also like to know.