Thanks for the responses. What you say makes sense. I went a little crazy and ordered 8 V-Cap TFTF caps. They are soldered in and I am waiting for the Wimas from Mesa which should be ok for the power supply.....I hope.....cause the V-Caps are indeed expensive. I wonder if it makes any sense to bypass the Wimas with .01 Multicaps, which I have laying around?? I read the reviews on the V-Cap, and couldn't resist. Yes I am using 5881s, Himu. Are there other brands of 5881 that you have experience with, or other tubes entirely? If my senses are correct, my Mesa sound (in the past) has a tiny bit of grain in the treble, somewhat overstated and not completely controlled bass, and very sweet mids. I sure am hoping for some nice results, cause I sure am nervous soldering in the amp. Really close connections in there.