Used PS Audio BHK Signature 300 Mono Amps - Pair

PS Audio

  • $5,499.00
    Unit price per 
  • Save $11,499

This Used PS Audio BHK Signature 300 Mono Amps - Pair is in decent shape. Both units are fully functioning but show some considerable cosmetic wear. As a result, I have priced these as a 2-for-1 deal. Both units were tested and inspected by Schroeder Amplification. These are available for local pickup only. Call 847-219-8985 for more info!

When you are unwilling to compromise performance we offer the BHK 300 Signature 300-watt Monoblock power amplifiers. They are among a rare handful of amplifiers capable of uncovering music's rich tapestry in a lush, uncompromised, effortless presentation.

The audio performance and build quality of the Signature 300 series have been refined, honed, and polished over the past half-century of design work by industry legend, Bascom H. King. They are monoblock amplifiers that produce 300 watts into 8Ω, 600 into 4Ω, and a whopping 1,000 watts into 2Ω. The BHK Signature 300 Monoblock designs are built upon two proven topologies: a zero-loss vacuum tube input stage coupled to a high-bias differentially balanced MOSFET output. If you are uncomfortable with compromise and seek the finest performance, reliability, and build quality, the BHK Signature 300 series is a perfect fit that can drive any loudspeaker to musical perfection.

The hybrid vacuum tube/MOSFET design of the BHK Signature Amplifiers provides stunning musical performance through any loudspeaker. The Signature 300 Mono doubles the output current of the 250 Stereo and doubles the tubes, power supplies, transistors, capacitors, and resistors. The results are hard to put into words. Your first listen to these extraordinary monoblock amplifiers will likely be a revelation. For perhaps the first time you'll discover all that has been long buried in your musical collection. You'll know this amp was the right choice from the very first note you play.

The BHK Signature 300 Mono Amplifier is one of only a rare handful capable of uncovering music's rich tapestry in a lush, uncompromised, effortless presentation. If you haven't any barriers to perfection, the BHK 300s are perfect for any size system in the world, producing a minimum of 300 watts into 8Ω, a minimum 600 watts into 4Ω, and an astonishing 1000 watts into 2Ω. Enough linear amplifier power to bring life to music as you've only experienced with live music.

The importance of the power amplifier in the 2-channel system chain cannot be overstated, yet it's often overlooked. It's the rare few music lovers that truly appreciate the power amp's critical role in preserving music's nuanced details, because most amplifiers fail to preserve them. Overtones from plucked instruments, subtle cues defining placement, depth, soundstage width, and transient decays are often lost in the power amplifier. Suddenly revealed are the tiniest of details that now ring clear through the BHK, perfectly preserved through its low feedback, vacuum tube and MOSFET design. When it comes to musically controlling and powering loudspeakers, the BHK Signature 300 has no peer. The Signature 300 monoblock amplifier produces 300 watts into an 8Ω loudspeaker, 600 watts into 4Ω, and 1,000 watts into 2Ω, providing unfettered and unrestricted dynamics and musical ecstacy that only a rare few are able to enjoy.


Unit Weight: 83 lbs [37.6 kg]
Unit Dimensions: 17.1” x 8.7” x 14” Chassis only. 15" deep including connectors.
Shipping Weight: 92 lbs [41.7 kg]
Shipping Dimensions: 21”x 13” x 19”
Voltage Options, Factory set only : North America 120V
Mains Power Inputs: IEC C14
Fuse Compliment all Countries: 4 - 10 amp fast blow H-Rated 5x20mm Rail Fuses
Fuse Compliment Mains: 120vac Countries
1 - 2 amp slow blow H-rated 5x20mm
1 - 10 amp slow blow H-rated 5x20mm
Accessories Included: US (NEMA 5-15P) (all versions)
Audio Inputs: RCA (Unbalanced), XLR (Balanced)
Speaker Outputs Signature 250: Gold plated copper binding posts (2 pair per channel)
Speaker Outputs Signature 300: Gold plated copper binding posts (2 pair)
Other: DC Trigger Input, 3.5mm 5-15VDC

Power Consumption
@Ready 75 Watts
@Idle 175 Watts
@Rated power 8Ω 850 Watts
@Rated power 4Ω 1600 Watts

Gain: 30.5dB +/-0.5dB
Sensitivity for rated output power of 250 watts into 8Ω 1.3V
Noise 100-20KHz <-85dBV
Input impedance Signature 250 stereo Unbalanced 100KΩ
Balanced 200KΩ
Input impedance Signature 300 mono Unbalanced 50KΩ
Balanced 100KΩ
Output Impedance 50Hz, 2.8VRMS <0.1Ω
Frequency Response @2.8VRMS
10Hz – 20KHz +/- 0.1dB
10Hz – 200KHz +0.1/-3.0dB

1KHz, 1W/8Ω: <0.01%
20-20KHz, 1W/8Ω <0.1%
1KHz, 200W/8Ω: < 0.1% (120VAC Mains input)
1KHz, 400W/4Ω: < 0.1% (120VAC Mains input)

Please don't hesitate to reach out.

Send an email to Tim

Or give me a call at 847-217-8985

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