Tube for CAT Mk3

I just retubed my CAT Mark 111 with NOS Mullard ECC88(6922) and NOS Mullard CV4004(12AX7). In my system, the Mullards improved the midrange and overall dynamics. They are also very quiet both in the line and phono stages. The only drawback of course is the cost. NOS Mullards are getting harder to find. I have also used Amprex 6DJ8(6922) with excellent results.(you can not use the 6DJ8s in the V6 and V7 postions secondary to difference in plate voltages)Good luck.

Yes, I am aware the the ECC88 is the same as a 6DJ8, I spoke with CAT and they said not to used the US 6DJ8 but the European ECC88 would be fine. It seems to work in my system. I am pleased with the sound.