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Thread: Before and after

  1. #1
    Join Date: Jan 2008

    Location: Central England

    Posts: 2,932

    Default Before and after

    Before

    One Puresound A30 selling for £1100 in the UK and offering superlative performance at this price point. It is fitted with Electro Harmonics 6550 main valves with Chinese stock driver and rectifier valves.



    After

    The amp has been more than breathed on by our resident engineer Anthony TD. The circuitry has been reconfigured to give more ooomph, better dynamics, transparency and finesse, the preamp circuitry has been ripped out to make it a power amp only and circuit paths have been shortened. All of the valves have been replaced. The main output valves are Cryogenically treated Svetlana KT88s, the driver valves are rare-as-rockinghorse-shit military spec Philips JAN 6SN7 and the rectifiers are Mullard GZ34s. It has also been named to commemorate this forum:


  2. #2
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,012
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Where's the 'After', ya numptie?

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.


    Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!

    Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!


  3. #3
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

    Default

    Wait for it...



    Maybe it'll come in a couple of weeks time?

    Ben Duncan mains conditioner
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    Samsung QE75Q90T 75" QLED TV
    XMOS DSD Async USB to Coax converter
    RME Audio ADI-2 FS (AK4493) DAC
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect
    Edifier S3000 Pro active speakers
    Atacama SE24 stands

  4. #4
    Join Date: Jan 2008

    Location: Central England

    Posts: 2,932

    Default

    After now added and more will follow:



  5. #5
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

    Default

    Ooooh, that's nice. The more I read about valve amps, the more I want to take a trip to Anthony's place and go listening.

    Ben Duncan mains conditioner
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    Samsung QE75Q90T 75" QLED TV
    XMOS DSD Async USB to Coax converter
    RME Audio ADI-2 FS (AK4493) DAC
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect
    Edifier S3000 Pro active speakers
    Atacama SE24 stands

  6. #6
    Join Date: Jan 2008

    Location: Central England

    Posts: 2,932

    Default

    Go to Anthony's by all means but you can make your way up here too.




  7. #7
    Join Date: Feb 2008

    Location: North East UK

    Posts: 6,358
    I'm InSpace.

    Default

    Nice! (don't like the power switch though)

    Any changes to the transformers? or any planned?

    Shian7
    --------------------------------------------------------

    Kudakutemo
    kudakutemo

    ari mizu-no tsuki

    Though it be be broken -
    broken again - still it's there:
    the moon on the water.

    - Choshu.

  8. #8
    Join Date: May 2008

    Location: Baja California, Mexico

    Posts: 126

    Default

    Quote Originally Posted by Shian7 View Post
    Nice! (don't like the power switch though)
    My thoughts exactly. The only thing I would change...

  9. #9
    Join Date: Feb 2008

    Location: Wirral, UK.

    Posts: 674
    I'm fightingmywayoutofawetecho.

    Default

    Quote Originally Posted by Shian7 View Post
    Nice! (don't like the power switch though)

    Any changes to the transformers? or any planned?

    Mmm looks fine to me,rather have it there than rooting round the back for it.

    Nice work Anthony.

  10. #10
    Join Date: Feb 2008

    Location: South Wales

    Posts: 9,151
    I'm NotTakingLifeTooSeriouslyTheseDays.

    Default amp.

    thanks guys for all your comments so far, much apreciated!
    anthony.

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