Tubes for CJ MV60SE


Hello,

The original tubes in my amp are now getting close to require replacement and I am looking for suggestions. I don't have any experience to speak of in regards to the different brand tubes and their particular sound characteristics. I like the sound of my amp with the tubes that were installed at factory by CJ, however there is no brand name stamped on the tubes. I believe that if I buy tubes direct from CJ cost will be higher than if I buy from other source but not sure of this. Does anyone know what brand tubes CJ installs in the MV60SE ?

Thanks,
sympaticonorm
Thanks guys... I definitely want to replace with stock tubes, so SED it is as I am perfectly happy with the sound of my CJ amp and system(VTL 2.5 pre-amp, Meridian 508.24, Proac 2 speakers).
I tried the Electroharmonix KT88. They have a more liquid sound, a slightly percentage of added resolution & detail They are equaly polite but the dont equal the Sed's on harmonic richness. Anyway, I liked very much what EH KT88 brings to the table, I say more than 6550.