Sounds like a question you should ask the manufacturer, he is very accessible and welcomes these type of injuries, he was certainly helpful in a similar decision I was in need of making.
Quicksilver M60 vs Early Silver 88
Anyone have experience with these two. I am Demoing a pair of M60 with 6550 tubes and I do love the sound. But have been leaning more towards a pair of Silver 88’s. Besides a 30% increase in power. Are the 88’s better in other ways? Tube replacement would be cheaper Since the 88’s have fewer tubes. Running Vandersteen speakers.