I don't have the same pre-amp (I have an Audible Illusions 3A), but when I pulled out the Russian tubes and put in some Volvo (1963 tubes)6DJ8/6922's from the Parts connection, it blew me away! I've tried several others, but these have been the best in my set up.
6922 tube rolling recommendations
I've been tube rolling tubes in my Bel Canto SEP-1 preamp.
I've gone from Sovteks to Jan NOS to Mullard(1970's version I think....$35/ea from Triode Elec) The Mullards sound much better...quieter background, better top end extension...it's really sparked my curiosity about trying other NOS tubes. I see VTS selling various Telefunken, Siemens, Amperex, and other older Mullards. Can anyone recommend a good step up from my current Mullard gold pins?
I've gone from Sovteks to Jan NOS to Mullard(1970's version I think....$35/ea from Triode Elec) The Mullards sound much better...quieter background, better top end extension...it's really sparked my curiosity about trying other NOS tubes. I see VTS selling various Telefunken, Siemens, Amperex, and other older Mullards. Can anyone recommend a good step up from my current Mullard gold pins?