PS Audio BHK Signature Preamplifier


BHK preamplifier

SKU: PSBHKPRE Categories: , Tag:

PS Audio BHK Signature Preamplifier


Preamplifiers are the the heart of any high-end music system controlling input selection, the critical first amplification stage, volume and balance functions, and the all important electrical isolation between sources and power amplifiers. Place the BHK Signature Preamplifier between your musical sources, such as a phono preamp, DAC, tuner or auxiliary source–and your power amplifier–and magic happens. Suddenly you are enveloped in a wealth of musicality you’ve not yet experienced: deeper, wider soundstaging, improved separation of instruments and voices, Subterranean bass, extended highs, and an openness you have yet to experience without this instrument in the system.


PS Audio BHK Signature Preamplifier

Zero-loss vacuum tube input stage
User accessible switch allows both 12 volt and 6 volt tubes to be used
Differentially coupled balanced MOSFET output stage
All through hole construction (no surface mount parts)
PRP resistors in signal path
5 RCA Single ended inputs
5 XLR balanced inputs
Single ended and balanced outputs
Single ended and balanced outputs can be used together or separate
Fully balanced input to output
High current oversized power transformer
Fully regulated power supplies using BHK designed MOSFET discrete voltage regulators
Full BHK designed zero feedback, discrete MOSFET headphone stage
Remote control
Front panel standby button for vacuum tube stage
-3dB greater than 200kHz
Volume and balance through a revolutionary new combination of gain and attenuation control
Two output DC control triggers
Easy access to tubes if you want to roll with different ones
Each input can be configured as a HT bypass

[title style=”bold” text=”PS Audio BHK Signature preamplifier specifications”]



Unit Weight 22 lbs [13.5 kg]

Unit Dimensions 14” x 17” x 4” [ 36cm x 43cm x 10cm]

Shipping Weight 31 lbs [19 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)

Audio Outputs

Coaxial RCA single ended (2), XLR Balanced (2)
Analog Audio Output

Connector RCA/XLR Unbalanced /Balanced (X2)
Output level 4.0 Vrms
Output Impedance <100Ω
Frequency Response 20-20KHz +/- 0.1dB
THD+N @ 1KHz (full scale) <0.03%
Bandwidth -3dB 0.1Hz – 200kHz
DC Triggers

+12V 2


PS Audio

PS Audio is now based in beautiful Boulder Colorado, with engineering, sales, marketing, production and administration facilities nestled up against the beautiful Rocky Mountains. Their company is still family owned and operated, a tradition they are proud of. Products are engineered in-house from the ground up using some of the most sophisticated design and evaluation tools available. They are strong proponents of utilising the latest technologies in service of building state-of-the-art high value music products for our customers. Their core products are all hand built to investment level standards in their modern production facilities in Boulder Colorado. They are a proud employer of more than 30 local artisans who design, build and make their products available all over the world. From their family to yours, let’s keep the spirit of great music and performances alive and well. If you’re in the neighborhood, come by and visit!

Additional information



Black, Silver


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