• ZERO-LOSS VACUUM TUBE INPUT STAGE
• 12V AND 6V TUBE SWITCH
• COUPLED & BALANCED MOSFET OUTPUT STAGE
• THROUGH-HOLE CONSTRUCTION
• PRP RESISTORS IN SIGNAL PATH
• 5x RCA SINGLE ENDED INPUTS
• 5 XLR BALANCED INPUTS
• SINGLE ENDED & BALANCED INPUTS
• FULLY BALANCED INPUT TO OUTPUT
• OVERSIZED POWER TRANSFORMER
• BHK DESIGNED MOSFET VOLTAGE REGULATORS
• BHK DESIGNED MOSFET HEADPHONE STAGE
• REMOTE CONTROL
• STANDBY BUTTON FOR VACUUM TUBE STAGE
• -3dB > 200kHz
• VOLUME & BALANCE THROUGH GAIN & ATTENUATION CONTROL
• 2x OUTPUT DC CONTROL TRIGGERS
• EASY ACCESS TO TUBES FOR CUSTOMIZATION
• EACH INPUT CAN BE SET TO HT BYPASS

Physical
Unit Weight: 22 lbs [9.97 kg]
Unit Dimensions: 17” x 14” x 4” [ 36cm x 43cm x 10cm]
Shipping Weight: 31 lbs [14 kg]
Shipping Dimensions: 20.5”x 24” x 10” [52cm x 61cm x 25cm]

Power requirements
Input Power: Model specific 100VAC, 120VAC, or 230VAC 50 or 60Hz
Power Consumption: 60W

Audio inputs
Coaxial RCA single ended: 5
XLR Balanced: 5

Input Impedance: 33KΩ minimum
Unbalanced (RCA): 66KΩ minimum
Balanced (XLR) 

Sensitivity Unbalanced: 1.3V/33KΩ
Sensitivity Balanced: 1.3V/66KΩ

Audio Outputs
Coaxial RCA single ended: 2
XLR Balanced: 2

Analog Audio Output
Output level: 4.0 Vrms
Output Impedance: <100Ω
Frequency Response 20-20KHz: +/- 0.1dB 
THD&IM @ 1KHz (full scale): <0.03%
Bandwidth: -3dB 0.1Hz – 200kHz

DC Triggers
+12V: 2

Headphone Performance
Output Power: >200mW
300Ω: 4.0 Watts
16Ω > 

S/N Ratio: >90dB (1KHz)
THD & IM 1 volt out: <0.02%
Output Impedance: <0.5Ω

Prairie Audio Man Cave, Juan C. Ayllon

...the Signature is the most transparent and neutral of the active preamps, giving added life and expression, but otherwise stepping out of the way of the music.

Bottom line, the PS Audio BHK Signature Preamplifier is the ultimate witness to the music: It tells the truth, the whole truth, and nothing but the truth! READ MORE

Stereophile,  Jim Austin

PS Audio's BHK Signature preamp is one of the finest audio components I've had in my home. It didn't raise the dead, but it could conjure in my listening room the spirits of dead musicians, or fine facsimiles thereof. It didn't solve my problems, but it could sure distract me from them—and, with the right recordings, even trigger catharsis or philosophical insight. READ MORE

Soundstage! Erich Wetzel

In the BHK Signature preamplifier, Bascom H. King has designed, and PS Audio has built, an outstanding performer. It possesses the top-quality fit and finish that one would expect to get for $5999. Its sound was beautiful and alive, re-creating three-dimensional soundstages that were the largest I’ve heard in my room. Its excellent clarity of sound let me easily decipher even the most complex music, its bass was superbly firm, deep, and controlled, and its treble extension was clear and articulate. READ MORE

Audiophilia,   Karl Sigman

What the PS Audio BHK Signature Preamplifier brings to the table is a significant achievement. For me, it seals the deal, and I believe it will satisfy audiophiles on both sides of the aisle (digital versus analog, tubes versus solid state), and those in between. Taking into consideration its price, simplicity of use, extraordinary quality of sound, design and features such as an included internal headphone amp, I must honestly say, ‘There is no preamp like this preamp’. Very highly recommended. READ MORE

Positive Feedback,   Dave Clark

Synergy and magic. Right now here in our listening room...Way deeper bass, way more open, way less whatever being in the way of our music… way more music. Dynamics… try My Disco's "1991" or anything from Lustmord. Happy times. READ MORE

2019 Class A Ranking from Stereophile 

2018 Recommended Component Award from Stereophile 

2017 Recommended Component Award from Stereophile 

2016 Brutus Awards from Positive Feedback 

2016 Recommended Component Award from Stereophile

https://www.psaudio.com/about/