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PS Audio BHK Signature Pre Amplifier

 

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Enquiry/price check? Click here SKU: PSABHKSIGPA
Ex VAT: £5,249.17
£6,299.00
Part of the BHK series, the Signature vacuum tube preamp is placed between your sources and power amp for a 3D soundstage and a presentation of musical moments previously hidden.

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Features

Warranty length 3 Years
Brand PS Audio

Tech Specs

- Unit Weight: 22 lbs [9.97 kg] / Shipping Weight: 31 lbs [14 kg]
- Unit Dimensions: 17” x 14” x 4” [36cm x 43cm x 10cm]
- 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, 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
- HD&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

Product Description

PS Audio BHK Signature Pre Amplifier is the heart of your hi-fi system, acting as the middle man between your sources and power amp. The BHK Signature executes extraordinary control and isolation to achieve incredible musicality, open soundstage and greater separation of instruments.

Designed by Bascom

Designed by audio engineering expert Bascom H.King, this pre-amp employs components with the goal of a superior sonic performance. The BHK Signature pre-amp uses a vacuum tube input stage found by Bascom to be more musically accurate and convincing then any other input configurations.

Zero Loss Vacuum Tube Input Stage

The BHK Signature Preamplifier features two hand selected 12AU7 dual triode vacuum tubes which provide the unit's gain. The two vacuum tubes perform as a zero feedback balanced input amplification pair. These tubes are fed by MOSFET's and the filament voltage is supplied from an independent regulated power supply for a clean source of free flowing electrons.

Balance and Single Ended Outputs

The vacuum tube input stage remains balanced no matter what input is used. The single ended RCA inputs or balanced XLR inputs are immediately converted to a pure balanced signal by the vacuum tube stage for the lowest distortion and maximum linearity performance.

Controlling the Volume

Volume control is a critical task for pre-amplifiers. Resolution perfect volume and balance control is achieved in the BHK Signature with an input stepped attenuator and switched gain adjustment. This combination means volume can be controlled in half dB steps for the cleanest, lowest impact gain control. What this achieves in a musical presentation defined by openness and sonic transparency.

MOSFET Based Regulator

MOSFET based discrete regulators are fed by a high current oversized toroidal analog transformer. An oversized power supply is critical to the performance of your audio equipment, and as is keeping the impedance low. These high voltage regulators are the product of years of meticulous research and listening tests to find the greatest sounding architecture. 

Headphone Amplifier

Incorporated within the PS Audio BHK Signature Pre Amplifier is a high spec, zero feedback headphone amplifier. It's able to get the best out of any high-end headphone, ensuring a sound performance that is near perfect. The internal headphone amplifier is just another feature alongside the zero-loss vacuum tube low impedance transformer coupled MOSFET and discrete voltage regulators.

Key Features

- 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

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Contact Details

UK Local Rate Number
0844 50 403 50

Sales Landline
0121 224 7300/7401

Customer Services Landline
0121 224 7350/7351

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