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In Reply to: RE: At best Cheever defines the euphonic, not the accurate posted by Disbeliever on April 03, 2014 at 09:12:25
Because it does. My ears tell it like it is and the best reason beyond that I can give you is that the distortion is primarily 2nd and 3rd order harmonics with no really high order harmonics. This means it is basically inaudible or do you not "believe" in the research behind psychoacoustics? Furthermore, KR is one of the few SET manufacturers that uses a properly specified output transformer that keeps bass distortion very low and thus eliminates the "tubey" coloration you are probably equating with "tube" sound.
If you ever get a chance, listen to a good OTL amp from Atma-sphere for example. You will realize that tube amps without the output transformer are lightening fast with deep tight bass and not a scotch of "tubey" coloration. It is the output transformer, not the tubes.
Finally, as far as a low frequency linear amplifier, the triode tube is still the closest to linear of ANY amplification device. Your beloved bipolar transistors are the LEAST linear...period! This is an incontrovertible fact... If you want to discuss other applications and suitability then we can but for an audio frequency amplifier triodes are NOT obsolete.
Follow Ups:
I have listened to many valve amps over many many years at audio shows World Wide, I agree,the distortion is mainly 2nd harmonic, and the transformers have to be very expensive I used to own both Quad & Radford, today I would not touch any antique tube amp with a barge pole that includes so-called modern ones. I listen mostly to mch SACD. I have much immediate experience with Live v recorded sound only Class AB does it for me.
Well, that's what I use, what's wrong with that?
You are the sole arbiter of how enjoyable your stereo is. No topology is perfect and arguably implementation matters more than technology and topology anyway.
In my dotage I'm even considering playing around with some low power amplifiers just for fun. The dynamic range of my ears ain't what she used to be so I really don't need much average power which opens up a lot of options, especially that of using really fast parts since the SOA shouldn't be of much concern.
Regards, Rick
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