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Thread: Transistors vs valves

  1. #51
    Join Date: Aug 2009

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    Quote Originally Posted by Barry View Post
    Didn't Colin Wonfor (of this parish) sell SECA (Single Ended Class A) solid state amps?
    As kits yes, but is a SECA the same thing as a SET (single ended triode)? I didn't think it was.
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  2. #52
    Join Date: Apr 2016

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    Quote Originally Posted by Macca View Post

    But the question was specifically about single ended triode amps - I don't think there are any commercially available solid state amps that will mimic a SET amp, if there are they have passed me by. But it should be possible to make one, only a question of copying the distortion characteristics.
    Thanks for re-stating that Martin, that was indeed my question.
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  3. #53
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    Which I can't answer
    Martin



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  4. #54
    Join Date: Jan 2009

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    Quote Originally Posted by Macca View Post
    As kits yes, but is a SECA the same thing as a SET (single ended triode)? I didn't think it was.
    Single ended is single ended. Regardless of the amplifying device, valve or solidstate, both have to operate in Class A. I thought that was what Colin's SECA design did.
    Barry

  5. #55
    Join Date: Aug 2009

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    Quote Originally Posted by Barry View Post
    Single ended is single ended. Regardless of the amplifying device, valve or solidstate, both have to operate in Class A. I thought that was what Colin's SECA design did.
    Right, but a SET amp is class A the same as a SECA is, it's the triode bit that is different. I have no idea why. I know you can get amps that can switch between triode and pentode operation so is it to do with the way the valves are driven? This is all out of my depth.
    Martin



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    Technics SLP1200 CD Player * Nelson Pass DCB1 Pre amp / Krell KSA50S Power amp * JM Lab Electra 926 loudspeakers *


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  6. #56
    Join Date: Jan 2009

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    Quote Originally Posted by Macca View Post
    As kits yes, but is a SECA the same thing as a SET (single ended triode)? I didn't think it was.
    Single ended is single ended. Regardless of the amplifying device, valve or solidstate, both have to operate in Class A. I thought that was what Colin's SECA design did, but oviously the best person who can confirm this is Colin himself.

    For those out there who understand audio circuitry, this is Colin's SECA design:

    Barry

  7. #57
    Join Date: Mar 2018

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    I've got a set of Colin's SECA here, but he now concentrates more on developing his Push/Pull stuff. IME the difference can be very small.

    The SECA stuff is available ready built, if you ask him directly. It is pretty amazing, and very robustly engineered. The last version I heard was very powerful, very warm and had ludicrous damping factor! However, it's never likely to be available from the webshop as a standard product.

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  8. #58
    Join Date: Oct 2008

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    Quote Originally Posted by Ninanina View Post
    These days I don't really care if an amp is ss or valve as long as it sounds good to me... I reckon that's all that matters...

    I guess I've gone full circle with amps... I used SET's of about 8w for years but now have a SS giving maybe 200w... and I love them both as long as they are used within their correct environment
    Wot She said...
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  9. #59
    Join Date: Apr 2016

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    Quote Originally Posted by walpurgis View Post
    Amplifiers that have a 'solid-state sound' or a 'valve sound' do so because there's something wrong with them. A properly designed amp of either sort should impart no character of its own to the sound.
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  10. #60
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    Quote Originally Posted by Gazjam View Post
    Wot She said...



    So maybe I don't talk utter rubbish all the time
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