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  • New PS Audio BHK Preamplifier

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    A Preamp Worthy of the BHK Name!
    BHK Signature Preamp Includes World-class Headphone Amp!


    Boulder, CO: 4/19/16: In the past year, the BHK Signature Amplifiers designed for PS Audio by industry legend Bascom H. King have won just about every attainable audio award, worldwide. Finally, after over a year of design and development, the BHK Signature Preamplifier is available to pair with the BHK Stereo 250 and BHK Mono 300s.

    The BHK Signature Preamplifier is the culmination of a lifetime of research and design work on the art of analog preamplification by Bascom King, whose longtime collaborator Arnie Nudell was actively involved in the voicing of the preamp, as he was with the BHK amps. “This is the best sounding preamplifier I have ever designed or heard,” said Bascom, and that’s saying a lot for a man of his experience.

    The preamplifier is a full function line stage, featuring five single ended and balanced inputs, a discrete Class-A MOSFET headphone amplifier, all classic through-hole construction, PRP resistors, assignable home theater bypass, and a fully balanced design. Based on a pair of zero feedback 12AU7 current-sourced vacuum tubes feeding a class A MOSFET output stage, the BHK Preamplifier enjoys extreme linearity with a rich and open sound. 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.

    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. The Signature Preamplifier uses 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. This unique topology turned out to be the most sonically-transparent level control we have yet heard, and can be controlled from either the front panel rotary controller or the remote control. It provides the lowest possible impact on music passing through–and is one of the primary reasons the BHK Signature presents music in such a revealing, open manner.

    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 amp input stages can test the mettle of any design, so it is critical a preamp’s output stage provide a high current, class A, low impedance design. The BHK Signature preamplifier output stage is a high-bias class A MOSFET design that is unaffected by cable and power amplifier interface challenges, and is part of the reason the BHK Signature delivers music in such an effortless fashion.

    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 as the main system. Built into the BHK Signature is a state of the art headphone amplifier capable of delivering near perfect performance for any high-end headphone. Extremely low–near zero–output impedance, zero feedback, transformer coupled, MOSFET and discrete, the internal headphone amplifier inside the BHK Signature is a tour de force that honors the music the designer worked so hard to preserve.

    Beta units of the BHK Signature Preamplifier will ship during May, with production shipments beginning in June. MSRP is $5999 in the US market; pricing may vary in other markets. Pre-order deposits can be made on the PS Audio website, and the first 50 units will be signed in gold by Bascom H. King.

    Complete details of the BHK Signature Preamplifier, including interviews with the designer, can be seen here.
    Myles B. Astor, PhD, Administrator
    Senior Editor, Positive-Feedback.com
    ________________________________________

    -Magico S5 Mk.2 speakers with SPod feet
    -Goldmund Telos 280 stereo amp
    -Goldmund Mimesis 37S Nextgen preamplifier
    -Doshi V3.0 phonostage
    -VPI Vanquish direct-drive turntable
    -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
    -Lyra Atlas SL Lambda, Fuuga, vdh Colibri Master Signature, MutechHayabusa, MOFI Master Tracker, Sumiko Songbird cartridges
    -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
    -Assorted cables including Transparent XL Gen. 5, Skogrand, Viero, Kubala-Sosna, Audience Au24SX, Genesis Advanced Technologies and Ensemble Power Cords
    -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

  • #2
    This is very interesting. Bascom King is a brilliant designer but not as well known (previously) as he has been more of a hired gunslinger ala John Curl than the primary of a company like Nelson Pass or Dan D'Agostino. PS Audio has been on a bit of a roll as of late.

    Comment


    • #3
      Originally posted by Rust View Post
      This is very interesting. Bascom King is a brilliant designer but not as well known (previously) as he has been more of a hired gunslinger ala John Curl than the primary of a company like Nelson Pass or Dan D'Agostino. PS Audio has been on a bit of a roll as of late.

      IIRC Bascom also wrote for Audio magazine?

      Actually Dan used to at least, do a lot of work for other companies! Aragon just to name one.

      Just like digital designers in the early days. Just a few digital designers did most of the early products.

















      Myles B. Astor, PhD, Administrator
      Senior Editor, Positive-Feedback.com
      ________________________________________

      -Magico S5 Mk.2 speakers with SPod feet
      -Goldmund Telos 280 stereo amp
      -Goldmund Mimesis 37S Nextgen preamplifier
      -Doshi V3.0 phonostage
      -VPI Vanquish direct-drive turntable
      -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
      -Lyra Atlas SL Lambda, Fuuga, vdh Colibri Master Signature, MutechHayabusa, MOFI Master Tracker, Sumiko Songbird cartridges
      -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
      -Assorted cables including Transparent XL Gen. 5, Skogrand, Viero, Kubala-Sosna, Audience Au24SX, Genesis Advanced Technologies and Ensemble Power Cords
      -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

      Comment


      • #4
        We have the amps currently in the store for evaluation, and they're pretty good! Definitely singing beautifully with the YG Sonjas...
        Disclosure:
        Alma Music and Audio - La Jolla, CA
        Aqua Hi-Fi - Audio Research - Audioquest - Audionet - Audiopax - Auralic - Aurender - Bergmann - Brodmann - D'Agostino - darTZeel - Devialet - DEQX - ELAC - Evolution Acoustics - Hegel - iFi - Innuos - IsoTek - Kii Audio - Koetsu - Kronos - Kubala Sosna - Kuzma - Larsen - Linn - MSB Technology - Music Hall - Ortofon - Solid Steel - Technics - Wharfedale - Wilson Audio - YG Acoustics
        [ http://almaaudio.com ]

        Comment


        • #5
          Originally posted by Alex Siufy View Post
          We have the amps currently in the store for evaluation, and they're pretty good! Definitely singing beautifully with the YG Sonjas...
          Two years ago, prototypes (?)were driving the Infinity Betas at RMAF and sounded pretty good too. Not sure if they were changed in the interim.
          Myles B. Astor, PhD, Administrator
          Senior Editor, Positive-Feedback.com
          ________________________________________

          -Magico S5 Mk.2 speakers with SPod feet
          -Goldmund Telos 280 stereo amp
          -Goldmund Mimesis 37S Nextgen preamplifier
          -Doshi V3.0 phonostage
          -VPI Vanquish direct-drive turntable
          -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
          -Lyra Atlas SL Lambda, Fuuga, vdh Colibri Master Signature, MutechHayabusa, MOFI Master Tracker, Sumiko Songbird cartridges
          -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
          -Assorted cables including Transparent XL Gen. 5, Skogrand, Viero, Kubala-Sosna, Audience Au24SX, Genesis Advanced Technologies and Ensemble Power Cords
          -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

          Comment


          • #6
            I'm not sure what they changed, as we heard them last year at the Newport show, and they were nowhere near as dynamic and punchy as they are right now...
            Disclosure:
            Alma Music and Audio - La Jolla, CA
            Aqua Hi-Fi - Audio Research - Audioquest - Audionet - Audiopax - Auralic - Aurender - Bergmann - Brodmann - D'Agostino - darTZeel - Devialet - DEQX - ELAC - Evolution Acoustics - Hegel - iFi - Innuos - IsoTek - Kii Audio - Koetsu - Kronos - Kubala Sosna - Kuzma - Larsen - Linn - MSB Technology - Music Hall - Ortofon - Solid Steel - Technics - Wharfedale - Wilson Audio - YG Acoustics
            [ http://almaaudio.com ]

            Comment


            • #7
              Originally posted by MylesBAstor View Post

              Two years ago, prototypes (?)were driving the Infinity Betas at RMAF and sounded pretty good too. Not sure if they were changed in the interim.
              As far as I can tell, it's modified slightly.
              Hugh Nguyen
              ACA

              Comment


              • #8
                Did the Amps you heard a while back have a tube Input stage ?
                Last edited by Alrainbow; 04-24-2016, 07:15 PM.
                analog stuff.
                otari mtr 10 2 track 1/4 made new by soren
                otari mtr 10 2 track 1/4 1/2 combo made new by soren
                sota sapphire used eminent tech ver 2 arm
                new sota nova table has magnetic levitation platter and full speed control and latest motor same arm as above
                thorens td124 sme ver 2 arm
                thorens td125 sme ver 2 arm
                kenwood direct drive sme ver 2 arm
                phono preamp Ml no 25 all re capped
                speakers cust infinity IRS V , new caps and LPS , magnets etc.
                mark levivson pre no 26 amps no 33
                digital three cust servers , win ser 2016 , AO
                Dacs lampi various

                Comment


                • #9
                  Originally posted by Alrainbow View Post
                  Did the Amps you heard a while back have a tube Input stage ?
                  Yes.
                  Myles B. Astor, PhD, Administrator
                  Senior Editor, Positive-Feedback.com
                  ________________________________________

                  -Magico S5 Mk.2 speakers with SPod feet
                  -Goldmund Telos 280 stereo amp
                  -Goldmund Mimesis 37S Nextgen preamplifier
                  -Doshi V3.0 phonostage
                  -VPI Vanquish direct-drive turntable
                  -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
                  -Lyra Atlas SL Lambda, Fuuga, vdh Colibri Master Signature, MutechHayabusa, MOFI Master Tracker, Sumiko Songbird cartridges
                  -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
                  -Assorted cables including Transparent XL Gen. 5, Skogrand, Viero, Kubala-Sosna, Audience Au24SX, Genesis Advanced Technologies and Ensemble Power Cords
                  -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

                  Comment


                  • #10
                    Thanks. There some redoes for sure on the amp originally it wa just stereo and no tube . Then the tube cam on and few more changes. It one of the Amos I ant to try out. Ironically I am using aragons 8008 BB same designer lol.
                    analog stuff.
                    otari mtr 10 2 track 1/4 made new by soren
                    otari mtr 10 2 track 1/4 1/2 combo made new by soren
                    sota sapphire used eminent tech ver 2 arm
                    new sota nova table has magnetic levitation platter and full speed control and latest motor same arm as above
                    thorens td124 sme ver 2 arm
                    thorens td125 sme ver 2 arm
                    kenwood direct drive sme ver 2 arm
                    phono preamp Ml no 25 all re capped
                    speakers cust infinity IRS V , new caps and LPS , magnets etc.
                    mark levivson pre no 26 amps no 33
                    digital three cust servers , win ser 2016 , AO
                    Dacs lampi various

                    Comment

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