I have owned a pair of Quicksilver Triodes for about a year now and am very impressed. Lots of punch, lots of inner detail, but I agree with Peter S, they are a bit on the bright side right out of the box. YOU MUST REPLACE THE FACTORY TUBES WITH VINTAGE MULLARDS!!! I replaced the 6C33Cs with NOS early '70s Svetlanas and noticed a small difference, but the huge change was in changing the single 12AX7 and 12BH7 to the '60s Mullards (the 12AX7 especially). The improvement was dramatic. Still has the inner detail, still has the clean & extended midrange & detailed treble, but with more bass punch, more of a rich warm sound, no more brightness. I have concluded that the tubes installed at the factory were a cost consideration and an availability consideration; not a sonic one. This tube swap costs less than $100 and makes these amps really sing; I have heard nothing in the $15,000 and under range that compare. By the way, if you are using a Quicksilver preamp, it also also will benefit incredibly from vintage Mullards (warmer sound) or vintage Telefunkens (more forward sound).
ps. Mike Sanders only made 50 pairs of the Triodes so hang onto those sweethearts!
ps. Mike Sanders only made 50 pairs of the Triodes so hang onto those sweethearts!