[morzh]

Also it is at this point with the C22 using Tesla tubes (which I have been told are not the best) and couple of not so good Fender tubes in a couple of positions (not phono, so they could affect the sound). I ordered a full set from Jim McShane, as follows;

12AX7LPS (Sovtek) matched pair. Supposed to be superquiet, for the phono input.
B759 Genalex re-issue (Sovtek) - for the rest of the positions.
ECC803S Tung-Sol reissue (Sovtek), 2pcs for V3 and V6 to see how they affect the sound. It is said that they sound "more energetic", I want to hear that for myself. If it is, I could use them for, say, Rock-n-Roll, and the B759 - for Jazz and Classical.
Mullard ECC83 - a pair of original good used tubes, for the same purpose.

Oh...and Jim threw in a couple of "placeholder" tubes (working but not so good) for the Phono input, to keep the good Phono tubes from being spent when I do not use the turntable. The schematic is such that it does require them in due to the filaments interconnect.

So, we will see if I could discern anything. The experience will cost me an extra $150 or so, but heck.....compared to what I have spent, it is not much. Plus the C22 does need new set of tubes anyway. I really hoe it will improve the sound.