When I had those amps I used EH KT88 tubes. A KT88 will give you a bigger brighter sound than a EL 34 type tube. It all depends on your taste!
Power Tubes Quicksilver Mid Mino
Just picked up a up Quicksilver Mid Mono along with 6 Mullard XF1 EL34’s. The tubestest surprisingly strong, but I want to extend thier life as long as possible and also try a different Tube Type. Any comments on the Gold Lion KT77 or KT66’s in the mid monos? I’m using a fairly efficient pair of Audio Note AN/Es, so I don’t think I need KT88’s or KT120’s. I’m running my exogal DAC striaghf into the amps. Great combo. Haven’t felt the need for an active pre. Thanks.