What tubes to use for Audio Research SP-9 MkIII?

My favorite tube in the 6DJ8 family is the Telefuken E188CC.
It is very detailed and laid-back (if this is the sound you are looking for). Siemens CCAs has more bass, and Valvo E188CCs is detailed but a bit forward. Amperex made many differnt types ranging from 6DJ8,6922,7308 Bugle Boys,PQ,USN,CEP,Gold Pin,World Globe,pinched tubes,made in USA, Hollad A getter& D getters (BTW D getter tubes are mellow sounding tubes)

Anyway, all this is quite maddening. I agree with Wlutke, these tubes can get very expensive, and Ebay is a good source to obtain some of these tubes for a listen. Good Luck!

BTW, here are the US and European equivelent #s for these tubes. 6DJ8-ECC88, 6922-E88CC,CCa, 7308-E188CC, the E288CC european tubes are physically longer in length and have a longer life span. There are also US JAN and British CV military tubes as well.

I am using Gold Aero Platinum, Gold Pin 7308 tubes in my SP9 Mk II. Sounds very much better than Valvo 6DJ8's.

Sorry for tagging on to this thread, but I also would like to know what you would suggest for tube's for my LS 25 mkl and PH 3SE. And....should we keep the pre-amp's and phono amp on (mute) if we listen 1 hour a day???

I welcome your responses!
Rick