Don Sachs DS2 vs Wells Audio Commander

i put shuguang we6sn7’s in the 2 primary signal (left) positions - at don’s recommendation ... and old stock rca red base 5692 in the minor driver positions

https://www.china-hifi-audio.com/en/shuguang-electronic-tube-valve-c-49/shuguang-we6sn7-electron-tub...

i have a gaggle of 6sn7-equivalent old stock tubes from my days with vac and cary amps, chose the quietest ones i had

i did go through 3 pair of those lovely big bottle chinese tubes to find a very quiet set

i love the ds pre as well, but agree that there is a little tube noise, the unit is sensitive to that... need to work at the tube selection to get very quiet tubes... but worth the trouble i think the unit sounds exceptionally good