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Thread: step up transformers and active head amps

  1. #11
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

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

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    Andr'e,

    I'm sure John's intentions are entirely honourable even though his opinion differs from yours

    I'll contribute to this discussion, in terms of step-up transformers and their merits, in more detail later.

    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!!!


  2. #12
    Join Date: Jan 2008

    Posts: 505

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    Quote Originally Posted by Marco View Post
    Andr'e,

    I'm sure John's intentions are entirely honourable even though his opinion differs from yours

    I'll contribute to this discussion, in terms of step-up transformers and their merits, in more detail later.

    Marco.
    Ok..Don't forget to mention your perfectly matched step up transformer in the process

  3. #13
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

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

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    Oh you can take that as a given

    Different strokes for different folks though...

    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!!!


  4. #14
    Join Date: Jan 2008

    Location: Ledegem Belgium

    Posts: 86

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    Dear Vinylscratcher

    In principle I didn't refer to our own products. After having been the chief editor of an audio magazine (yeh a printed one) I've seen lots of transformers and preamps. My thinking about the subject has to do with that experience (and our own R&D of course).
    And sure there are some nice sounding transformers around, I know.

    John
    Music is an emotional experience. Without it, living would be a dull habit...

  5. #15
    Join Date: Jan 2008

    Posts: 505

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    Quote Originally Posted by johnrtd View Post
    Dear Vinylscratcher

    In principle I didn't refer to our own products. After having been the chief editor of an audio magazine (yeh a printed one) I've seen lots of transformers and preamps. My thinking about the subject has to do with that experience (and our own R&D of course).
    And sure there are some nice sounding transformers around, I know.

    John
    Grinder John, Grinder not Scratcher!

    Yep there are some pretty shitty transformers knocking about, but pick a good un & bingo..

  6. #16
    leo's Avatar
    leo is offline Circuit Junkie & DIY Room Forum Leader
    Join Date: Jan 2008

    Location: Notts UK

    Posts: 1,805

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    Both traffo and active circuits have their downside, problem with MC is that its such a small signal it takes an extremely low noise circuit to work well, a lot of designs are either too slow or too noisy, traffo's also have their downsides as already mentioned, theres lots of cable in these things and good quality wound does not come cheap

    I wouldn't like to put my money on which is the best way to go tbh

  7. #17
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

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    Quote Originally Posted by Vinyl Grinder View Post
    Grinder John, Grinder not Scratcher!
    LOL!

    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

  8. #18
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

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

    Default

    What's a grind or a scratch between friends?

    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!!!


  9. #19
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

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    Quote Originally Posted by Marco View Post
    What's a grind or a scratch between friends?

    Marco.
    2 years or 6 months respectively.


    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

  10. #20
    Join Date: Feb 2008

    Posts: 18

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    Interesting thread.

    If, hypothetically speaking, I wanted to try out a Purseound P10 with my AT-OC9, can anyone recommend a suitable step-up that costs no more than around £100? Or would it cost more than this? Anyway, any suggestions would be much appreciated.

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