"Sander deWaal" wrote in message
...
"Trevor Wilson" said:

**They distort and add microphonics to the signal.

Tell me how much distortion (THD and/or IMD) an SRPP stage with 6DJ8
has.
Microphonics can be avoided by selecting good tubes.

**Wrong. ALL tubes are microphonic. CJ realise this fact and the entire
substructure of the preamp is mounted with compliant material.

That of course is always a good idea.
But it is entirely possible to design a SRPP, yes even a CC circuit
with negligible distortion.

**Yep. CJ proved that, with the Prem 16. ARC did not manage it with either
the SP-11 or the SP-15. CJ went one step further and alleviated the problem
of microphonics, which afflicts ALL tube preamps.


--
Trevor Wilson
www.rageaudio.com.au