I would still love to know how VAC gets 100 watts per pair of KT88s without tube reliability issues or distortion. Probably some proprietary secrets, the intelligent auto bias, as well as huge power supplies to comfortably generate the needed plate voltages. I have heard Kevin use The Signature 200 IQ in monoblock configuration at a couple of shows and the sound was memorable. I'll place an order and give them a spin in stereo first. I would also love to hear from Zesto amplifier owners, either the Bia 120 or Eros 300. Thanks so much!
How do tube manufacturers like VAC get 55 watts per KT88 where others get only 30-35?
Just wondering how some push pull tube manufacturers like VAC and others get 55 watts per KT88 tube while others are more in the range of 35? Does driving a tube hard like this have any ramifications as to distortion, sound, headroom and tube life? I know VAC amps are highly musical so design, power supply and output transformers obviously contribute much to overall sonics. A company like Zesto gets about 25 watts per KT88 but uses a class A push pull circuit rather than class AB. This seems like an attractive design.
I guess, as always, it's all in the implementation. Thank you for helping me to better understand.
I guess, as always, it's all in the implementation. Thank you for helping me to better understand.
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- 24 posts total
- 24 posts total