PS Audio BHK Signature Preamplifier Preamplifier

PS Audio BHK Signature Preamplifier

  • Product Code: BHK Signature Pre
  • £6,300.00

Please Note: We can only ship this item within the UK Only.

BHK Signature Preamplifier - State of the Audio Art in musical preamplification

Preamplifiers can make or break a system; holding back rich details buried in the music. They are the critical link between sources and power amplifiers. Precious few of them, only a handful really, uncover, preserve and amplify the rich bloom of music. The PS Audio BHK Signature Preamplifier is one of the rare few that brings out the magic.

“In my 50 plus years of reviewing, designing and just listening to music, I have never heard my system sound this open, dynamic and….magical…and the bass!” Bascom H. King

Introducing one of the most remarkable musical instruments in the world, the PS Audio BHK Signature Preamplifier. This exceptionally built vacuum tube preamplifier opens up the music and reveals nuances, life and space not previously heard on your system. It is the perfect interface between your sources and power amplifier. Designed by Bascom H. King, the PS Audio BHK Signature brings Bascom’s 50 plus years of high end audio design experience into a single masterpiece of audio amplification. “This is the best sounding preamplifier I have ever designed or heard,” and that’s saying a lot for a man of Bascom’s experience.

Preamplifiers play a critical role in any separates audio system, strategically positioned between sources of music: CD players, phono preamps, DACs, tape recorders and tuners, and your power amplifier, the preamplifier serves essential roles of control and isolation. Control is simple in concept, but extraordinarily difficult to design in an acoustically transparent manner. Control duties such as input switching, volume, balance, and amplification can place unwanted acoustic thumbprints on the music if not designed with extraordinary care. The challenge in any design is to do as little damage to music’s purity as possible.

The single most important element of design

Over Bascom’s half century of designing high end audio products for companies like Infinity, Marantz, Conrad Johnson, Counterpoint, Constellation Audio, and now PS Audio, one overriding principle has dominated all others when sonic compromise isn’t an option: use of a vacuum tube on the input. The isolation and near perfect linearity of a well designed vacuum tube input stage cannot be duplicated by solid state means, though many have tried.

“Vacuum tubes are simply more convincing and musically accurate than any other input configuration I have ever tried,” said Bascom, and the BHK Signature preamplifier is demonstrative of this observation.

The PS Audio BHK Signature Preamplifier features two 12AU7 dual triode vacuum tubes in the input stage that act as a zero feedback balanced input amplification pair. A unique self biasing constant current source and user selectable switch combination allows those who like to roll their own tube selections to place any acceptable 6, 7 or 12 series vacuum tubes inside the preamp. The twin hand selected vacuum tubes that ship with the BHK are the preferred models we recommend and use in PS Audio’s Music Room One reference system.

It all starts at the input

The PS Audio BHK Signature Preamplifier features 5 identical balanced and single ended inputs. Each of the inputs, whether single ended (RCA) or balanced (XLR) are immediately converted to a pure balanced signal by the dual triode vacuum tube for lowest distortion, highest linearity performance. Input switching is accomplished through hand selected double pole double throw, gold plated relays that have been chosen for their sonic neutrality. The signals, once selected, are passed directly the revolutionary new multi stage attenuator controlling both volume and balance.

If the preamp is going to be part of a home theatre system controlling the main left and right channels, each input can be user assigned as a home theatre bypass.

Controlling the volume is a critical task

Perhaps the most difficult challenge facing preamp designers is the volume control. Simple in concept, controlling the level fed to your power amplifier, without damaging the sound, can be one of the most daunting design tasks. During high end audio’s formative years it had become standard practice to incorporate a high quality rotary potentiometer to control the volume. Over the years designers discovered even the finest of those controls imparted an unacceptable sonic thumbprint, robbing the music of life and openness. Various schemes at removing the potentiometer’s degradation were tried with varying degrees of success. They included stepped attenuators, conductive plastic impedance elements, electronic gain circuits, relay, CMOS switching, and a host of other innovative ideas.

Bascom King decided to try a fresh and novel approach in the Signature preamplifier. A combination of an input stepped attenuator, built around the highest quality passive components for course volume adjustments, coupled with controlling the actual gain of the vacuum tube for finer steps, turned out to be the most sonically transparent level control PS Audio have yet heard. This unique topology, which can be controlled from either the front panel rotary controller or the remote control, provides the lowest possible impact on music passing through and is one of the primary reasons the PS Audio BHK Signature presents music in such a revealing, open manner.

Once amplified the signal must interface with the outside world

A designer’s best efforts at preamplification can be wasted if the interface between the preamp’s output, the interconnecting cables, and the receiving power amplifier are not optimized for lowest impact, best performance. Cable interactions and power amplifier input stages can test the mettle of any design, so it is critical a preamplifier’s output stage provide a high current, Class A, low impedance design. The PS Audio BHK Signature preamplifier output stage is a high bias Class A MOSFET design that is unaffected by cable and power amplifier interface challenges. Simultaneous connections of both single ended (RCA) and balanced (XLR) outputs have minimal impact on the delicate vacuum tube gain stage and provide remarkable isolation between source components and the power amplifier of your system.

This high current low impedance Class A output stage is part of the reason the PS Audio BHK Signature delivers music in such an effortless fashion. One of the first qualities owners of the preamplifier will appreciate is its remarkable ability to isolate source and control from the power amplifier, and one of the principle factors in the PS Audio BHK Signatures extraordinary life like presentation of music, preserving every nuance in your media.

The headphone amplifier

Not every system is based exclusively around the loudspeaker and power amplifier. Many of today’s finest systems incorporate high end headphones as either an adjunct to the main system or are the main system. Built into the PS Audio BHK Signature is a state of the art headphone amplifier capable of delivering near perfect performance for any high end headphone. The PS Audio BHK Signature headphone amplifier was borne from years of work on such products as the Audeze King (designed by Bascom) among others. Extremely low near zero output impedance, zero feedback, transformer coupled, MOSFET and discrete, the internal headphone amplifier inside the PS Audio BHK Signature is a tour de force that honours the music the designer worked so hard to preserve.

Amplifiers
Frequency Response 20-20KHz +/- 0.1dB
AV Bypass Yes
Inputs 5 x RCA (Single Ended), 5 x XLR (Balanced), 1 x 12V Trigger
Outputs 1 x RCA (Single Ended), 1 x XLR (Balanced), 1 x 1/4" headphone connector (front panel), 1 x 12V Trigger
Dimensions (H x W x D) 100mm x 430mm x 360mm
Weight 19.99 KG

3 Year Warranty - Terms and Conditions Apply

At Audio Destination we use various delivery methods to suit various needs from standard Royal Mail services (1st Class,Recorded or Special Delivery) to a fully insured courier service (one we have used for many years) depending on size,weight and cost of item.

Postage costs will show at checkout.

One thing customers can rely upon is Audio Destination will do whatever we can to get the item you have purchased to you as quickly as possible but again we will inform you if there are likely to be any delays.

Should any problems arise or any special request need to be catered for then please call us on 01884 243584 (and ask for Mike or Caroline) or leave a message in the comments section when ordering and this way we can make your experience of ordering from Audio Destination as enjoyable as possible.

Please Note: We can only ship this item within the UK Only.

BHK Signature Preamplifier - State of the Audio Art in musical preamplification

Preamplifiers can make or break a system; holding back rich details buried in the music. They are the critical link between sources and power amplifiers. Precious few of them, only a handful really, uncover, preserve and amplify the rich bloom of music. The PS Audio BHK Signature Preamplifier is one of the rare few that brings out the magic.

“In my 50 plus years of reviewing, designing and just listening to music, I have never heard my system sound this open, dynamic and….magical…and the bass!” Bascom H. King

Introducing one of the most remarkable musical instruments in the world, the PS Audio BHK Signature Preamplifier. This exceptionally built vacuum tube preamplifier opens up the music and reveals nuances, life and space not previously heard on your system. It is the perfect interface between your sources and power amplifier. Designed by Bascom H. King, the PS Audio BHK Signature brings Bascom’s 50 plus years of high end audio design experience into a single masterpiece of audio amplification. “This is the best sounding preamplifier I have ever designed or heard,” and that’s saying a lot for a man of Bascom’s experience.

Preamplifiers play a critical role in any separates audio system, strategically positioned between sources of music: CD players, phono preamps, DACs, tape recorders and tuners, and your power amplifier, the preamplifier serves essential roles of control and isolation. Control is simple in concept, but extraordinarily difficult to design in an acoustically transparent manner. Control duties such as input switching, volume, balance, and amplification can place unwanted acoustic thumbprints on the music if not designed with extraordinary care. The challenge in any design is to do as little damage to music’s purity as possible.

The single most important element of design

Over Bascom’s half century of designing high end audio products for companies like Infinity, Marantz, Conrad Johnson, Counterpoint, Constellation Audio, and now PS Audio, one overriding principle has dominated all others when sonic compromise isn’t an option: use of a vacuum tube on the input. The isolation and near perfect linearity of a well designed vacuum tube input stage cannot be duplicated by solid state means, though many have tried.

“Vacuum tubes are simply more convincing and musically accurate than any other input configuration I have ever tried,” said Bascom, and the BHK Signature preamplifier is demonstrative of this observation.

The PS Audio BHK Signature Preamplifier features two 12AU7 dual triode vacuum tubes in the input stage that act as a zero feedback balanced input amplification pair. A unique self biasing constant current source and user selectable switch combination allows those who like to roll their own tube selections to place any acceptable 6, 7 or 12 series vacuum tubes inside the preamp. The twin hand selected vacuum tubes that ship with the BHK are the preferred models we recommend and use in PS Audio’s Music Room One reference system.

It all starts at the input

The PS Audio BHK Signature Preamplifier features 5 identical balanced and single ended inputs. Each of the inputs, whether single ended (RCA) or balanced (XLR) are immediately converted to a pure balanced signal by the dual triode vacuum tube for lowest distortion, highest linearity performance. Input switching is accomplished through hand selected double pole double throw, gold plated relays that have been chosen for their sonic neutrality. The signals, once selected, are passed directly the revolutionary new multi stage attenuator controlling both volume and balance.

If the preamp is going to be part of a home theatre system controlling the main left and right channels, each input can be user assigned as a home theatre bypass.

Controlling the volume is a critical task

Perhaps the most difficult challenge facing preamp designers is the volume control. Simple in concept, controlling the level fed to your power amplifier, without damaging the sound, can be one of the most daunting design tasks. During high end audio’s formative years it had become standard practice to incorporate a high quality rotary potentiometer to control the volume. Over the years designers discovered even the finest of those controls imparted an unacceptable sonic thumbprint, robbing the music of life and openness. Various schemes at removing the potentiometer’s degradation were tried with varying degrees of success. They included stepped attenuators, conductive plastic impedance elements, electronic gain circuits, relay, CMOS switching, and a host of other innovative ideas.

Bascom King decided to try a fresh and novel approach in the Signature preamplifier. A combination of an input stepped attenuator, built around the highest quality passive components for course volume adjustments, coupled with controlling the actual gain of the vacuum tube for finer steps, turned out to be the most sonically transparent level control PS Audio have yet heard. This unique topology, which can be controlled from either the front panel rotary controller or the remote control, provides the lowest possible impact on music passing through and is one of the primary reasons the PS Audio BHK Signature presents music in such a revealing, open manner.

Once amplified the signal must interface with the outside world

A designer’s best efforts at preamplification can be wasted if the interface between the preamp’s output, the interconnecting cables, and the receiving power amplifier are not optimized for lowest impact, best performance. Cable interactions and power amplifier input stages can test the mettle of any design, so it is critical a preamplifier’s output stage provide a high current, Class A, low impedance design. The PS Audio BHK Signature preamplifier output stage is a high bias Class A MOSFET design that is unaffected by cable and power amplifier interface challenges. Simultaneous connections of both single ended (RCA) and balanced (XLR) outputs have minimal impact on the delicate vacuum tube gain stage and provide remarkable isolation between source components and the power amplifier of your system.

This high current low impedance Class A output stage is part of the reason the PS Audio BHK Signature delivers music in such an effortless fashion. One of the first qualities owners of the preamplifier will appreciate is its remarkable ability to isolate source and control from the power amplifier, and one of the principle factors in the PS Audio BHK Signatures extraordinary life like presentation of music, preserving every nuance in your media.

The headphone amplifier

Not every system is based exclusively around the loudspeaker and power amplifier. Many of today’s finest systems incorporate high end headphones as either an adjunct to the main system or are the main system. Built into the PS Audio BHK Signature is a state of the art headphone amplifier capable of delivering near perfect performance for any high end headphone. The PS Audio BHK Signature headphone amplifier was borne from years of work on such products as the Audeze King (designed by Bascom) among others. Extremely low near zero output impedance, zero feedback, transformer coupled, MOSFET and discrete, the internal headphone amplifier inside the PS Audio BHK Signature is a tour de force that honours the music the designer worked so hard to preserve.

Amplifiers
Frequency Response 20-20KHz +/- 0.1dB
AV Bypass Yes
Inputs 5 x RCA (Single Ended), 5 x XLR (Balanced), 1 x 12V Trigger
Outputs 1 x RCA (Single Ended), 1 x XLR (Balanced), 1 x 1/4" headphone connector (front panel), 1 x 12V Trigger
Dimensions (H x W x D) 100mm x 430mm x 360mm
Weight 19.99 KG

3 Year Warranty - Terms and Conditions Apply

At Audio Destination we use various delivery methods to suit various needs from standard Royal Mail services (1st Class,Recorded or Special Delivery) to a fully insured courier service (one we have used for many years) depending on size,weight and cost of item.

Postage costs will show at checkout.

One thing customers can rely upon is Audio Destination will do whatever we can to get the item you have purchased to you as quickly as possible but again we will inform you if there are likely to be any delays.

Should any problems arise or any special request need to be catered for then please call us on 01884 243584 (and ask for Mike or Caroline) or leave a message in the comments section when ordering and this way we can make your experience of ordering from Audio Destination as enjoyable as possible.

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