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Thread: step up transformers and active head amps

  1. #11
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,460
    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 & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and 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. 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.

  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: 110,460
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    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 & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and 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. 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.

  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: 1,804

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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: 6,258
    I'm BigBobJoylove.

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

    Lounge:
    Samsung QE65QN80F 65" QLED TV
    Echo Link streamer
    RME Audio ADI-2 FS (AK4493) DAC
    XMOS DSD Async
    Emotiva A2+ power amplifier
    Neat Motive SX1 speakers
    Van Damme 4.00mm tour grade speaker cable
    Nakamichi Fanlock banana plugs
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect


    Studio:
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    SMSL DAC
    Modified Fosi P4 preamp
    Adam Audio T5Vs
    Fenton 10" active sub
    Roxel RBS 300s
    Several valve preamps

  8. #18
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,460
    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 & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and 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. 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.

  9. #19
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,258
    I'm BigBobJoylove.

    Default

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

    Marco.
    2 years or 6 months respectively.


    Lounge:
    Samsung QE65QN80F 65" QLED TV
    Echo Link streamer
    RME Audio ADI-2 FS (AK4493) DAC
    XMOS DSD Async
    Emotiva A2+ power amplifier
    Neat Motive SX1 speakers
    Van Damme 4.00mm tour grade speaker cable
    Nakamichi Fanlock banana plugs
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect


    Studio:
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    SMSL DAC
    Modified Fosi P4 preamp
    Adam Audio T5Vs
    Fenton 10" active sub
    Roxel RBS 300s
    Several valve preamps

  10. #20
    Join Date: Feb 2008

    Posts: 18

    Default

    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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