Primaluna or not Primaluna

Simna, sorry for the late reply I just saw this. My mid monos are older so my biasing needs to be done with a multimeter. This is not hard to do at all but an LED light would make it infinitely easier. When I first bought them I actually asked Mike Sanders this very question and he replied that the biasing for all the tubes the amp can use is at the same value

Sorry should have said metis Magnum pre. Damn voice to text. I should point out that it's no Revelation that rolling tubes in the preamp makes a big difference as well so it's just another level of adjustment for both sets of amplifiers. Because the prima Luna are somewhat clinical I usually run those with kenrad from the early 50s. With the Quicksilver I often run a modern 6sn7 from tung sol but my favorite is a set of Raytheon from the 60s

For what it's worth I have both a set of prima Luna prologue 6 monos and a set of quicksilver mid mono. I have run both through my rogue audio meta Magnum pre and love them both for different reasons. Both have impeccable build quality and have been able to easily drive the myriad speakers I have hooked up to them including magnapan lrs gallo nucleus 3.1 Sonus Faber chameleon and venere etc. I like to swap them out depending on my mood. The Quicksilver are very tubey and have a very fun nostalgic sound. That is not to say they are not detailed they just sound like tubes whereas the prima Luna is extremely detailed but does not sound like a traditional tube amplifier. The prima Luna take to tube rolling very well. If I am in the mood for Rock I tend to go with kt 120 but the best sounding tube in that amp by far are the El which they were voiced for. The fact of the matter is I don't think you can go wrong with either. I hope that helps good luck

I think because these have been in production for so long there are various iterations. With mine you bias each tube individually. I start at 40 ma and adjust by ear. Typically the El come in somewhere around 46 and oddly enough the kt120 come in roughly the same. I believe I was mistaken when I said Mike told me both were at the same value it had been a long time since I had spoken to him and I since both tubes that I use in those coming around the same value I was obviously confused, my apologies. These were my first tube amps and I was a little intimidated at first but it is surprisingly easy, doesn't have to be done often, and is definitely worth it from a Sonic standpoint.