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Thread: Tron Convergence MC Phonostage auditioned

  1. #31
    Join Date: Jan 2009

    Location: Sheffield - UK

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    I'm Mark.

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    I'm not aware of one - will look into it.

    100% Analogue

  2. #32
    Join Date: Nov 2015

    Location: Wolverhampton

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    I'm Oliver.

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    Quote Originally Posted by Arkless Electronics View Post
    That's what I'm hoping!

    Edit: Apparently there may be an LFD phono stage with the same technology.
    Oh. Does that scupper things ?

    Sent from my EVA-L09 using Tapatalk
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK5 tonearm > Ortofon Kontrapunkt b > Wizard Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Firebottle modded Xiang Sheng DAC (Telefunken Valve)
    Amplification: Nelson Pass DCB1 & Firebottle Monoblocks (Telefunken Valves) & Monarchy Audio SM-70 Class A Amplifier
    Cables: Fisual S-Flex Speaker Cable & SPOTFIRE IC Cables & NEW SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

  3. #33
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,175
    I'm Jez.

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    Quote Originally Posted by Bigman80 View Post
    Oh. Does that scupper things ?

    Sent from my EVA-L09 using Tapatalk
    Quote Originally Posted by YNWaN View Post
    I'm not aware of one - will look into it.

    The designer of The PIP is Owen Jones who studied/worked with Professor Hawksford of Essex University one of who's theories is "Low Fuzzy Distortion" LFD...
    I believe LFD is a commercial offshoot of Hawksfords with another guy... (Bewley rings a bell?). The PIP had rave reviews at the time and I reckon it is not much of a presumption that the top LFD phono stages will probably use the same technique...

    It scuppers nothing at all! Transconductance amplification is hardly new (though very rarely used in audio) and I can prove that I independently "invented" a transconductance RIAA stage 20 years ago

    I have a power amp designed as well that uses the technique to provide the low distortion gain for a zero feedback class A jobby... Vapourware of course
    Hey if someone wants to say "I'll buy the first one" I'll start making it exist

  4. #34
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 5,699
    I'm Oliver.

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    Quote Originally Posted by Arkless Electronics View Post
    The designer of The PIP is Owen Jones who studied/worked with Professor Hawksford of Essex University one of who's theories is "Low Fuzzy Distortion" LFD...
    I believe LFD is a commercial offshoot of Hawksfords with another guy... (Bewley rings a bell?). The PIP had rave reviews at the time and I reckon it is not much of a presumption that the top LFD phono stages will probably use the same technique...

    It scuppers nothing at all! Transconductance amplification is hardly new (though very rarely used in audio) and I can prove that I independently "invented" a transconductance RIAA stage 20 years ago

    I have a power amp designed as well that uses the technique to provide the low distortion gain for a zero feedback class A jobby... Vapourware of course
    Hey if someone wants to say "I'll buy the first one" I'll start making it exist
    Haha, matey, if money was no object, I'd fund that venture !



    Sent from my EVA-L09 using Tapatalk
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK5 tonearm > Ortofon Kontrapunkt b > Wizard Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Firebottle modded Xiang Sheng DAC (Telefunken Valve)
    Amplification: Nelson Pass DCB1 & Firebottle Monoblocks (Telefunken Valves) & Monarchy Audio SM-70 Class A Amplifier
    Cables: Fisual S-Flex Speaker Cable & SPOTFIRE IC Cables & NEW SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

  5. #35
    Join Date: Jan 2009

    Location: Sheffield - UK

    Posts: 6,009
    I'm Mark.

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    I've found the Silbatone C-100 which uses transconductance circuitry. The most recent price for that I can see is 70,000.00. I can't seem to find any mention of LFD using the technique, though information on LFD isn't easy to find full stop.

    100% Analogue

  6. #36
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,085
    I'm Tom.

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    Quote Originally Posted by Arkless Electronics View Post
    As I mentioned elsewhere the other day I am planning on making an MC only phono stage which uses the same operating principle as the Paradise... which operates in a completely different manner to all other phono stages other than the Pink Triangle "PIP" (to the best of my knowledge no other units using the principle exist anyway). I also independently "invented" the same thing about 20 years ago and built and sold several very good phono stages which are still in use today using the idea.
    It is already designed at computer simulation level and sim results look very good. I intend that it will be a two box unit at around 800-1000 starting price. All circuitry is of my own design and this is not intended to be a "Paradise clone" but a design in it's own right which uses the same operating principle as the Paradise and Pink Triangle PIP.
    Please put me in the queue to hear this Jez. This sounds very interesting.
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 / Ikeda IT-407 tonearms; Cartridges Stereo - Miyajima Madake, Ortofon SPU Royal N, Ikeda 9C III, SAEC/Excel C3; Mono - Miyajimas - Zero 0.7, Premium 1.0, Sonovox MC-4 1.0, Edison '78' 4.0 conical, and Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Pass Aleph 'Mini'; preamp - Firebottle custom; Vinyl: Garrard 401 with AT1503 tonearm and vintage Ortofon SL-15e with matching Ortofon 2-15k SUT; Phono Stage: Firebottle Plus; Digital - Trichord Genesis III CDP + Arcam rBlink; Schiit Multibit DAC.

  7. #37
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,175
    I'm Jez.

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    Quote Originally Posted by YNWaN View Post
    I've found the Silbatone C-100 which uses transconductance circuitry. The most recent price for that I can see is 70,000.00. I can't seem to find any mention of LFD using the technique, though information on LFD isn't easy to find full stop.
    A possible 3 commercial units then... One made in small quantities, many of which ceased to function it seems, by a no longer trading company donkeys ago... a possible unit from LFD.... and one more which I've never heard of at HOW MUCH!!?? Does it have solid gold casework?

    Room for another one then

    Oh and did I mention that I've come up with a new technique for servoing the input stage biasing (yeah that's vague.. and all yer going to get) which means I can get rid of all the electrolytic caps in the Paradise? The computer says it works a dream 'n all. Will it work in practice? I'll find out when I make one but I can't think of any reason why not.... famous last words

  8. #38
    Join Date: Oct 2012

    Location: The Black Country

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    I'm Alan.

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    Brilliant Jez, give it a good servoing

  9. #39
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,175
    I'm Jez.

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    Quote Originally Posted by Firebottle View Post
    Brilliant Jez, give it a good servoing
    It's not an actual word, true enough, but I like it.

    Edit: Looked it up and there is such a word

  10. #40
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 5,699
    I'm Oliver.

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    Quote Originally Posted by Arkless Electronics View Post
    A possible 3 commercial units then... One made in small quantities, many of which ceased to function it seems, by a no longer trading company donkeys ago... a possible unit from LFD.... and one more which I've never heard of at HOW MUCH!!?? Does it have solid gold casework?

    Room for another one then

    Oh and did I mention that I've come up with a new technique for servoing the input stage biasing (yeah that's vague.. and all yer going to get) which means I can get rid of all the electrolytic caps in the Paradise? The computer says it works a dream 'n all. Will it work in practice? I'll find out when I make one but I can't think of any reason why not.... famous last words
    Lol. You seem to be inspired Jez!!! I like it.

    Start a thread. I'll be following intently.

    Sent from my EVA-L09 using Tapatalk
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK5 tonearm > Ortofon Kontrapunkt b > Wizard Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Firebottle modded Xiang Sheng DAC (Telefunken Valve)
    Amplification: Nelson Pass DCB1 & Firebottle Monoblocks (Telefunken Valves) & Monarchy Audio SM-70 Class A Amplifier
    Cables: Fisual S-Flex Speaker Cable & SPOTFIRE IC Cables & NEW SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

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