In the Inspire amp I also enjoy the detail and neatness of the 6L6 GC and 6V6 GT, but with the 5Z4 rectifier much more so than with the 5Z3 (5U4G) ... The KT88's are full-bodied and highly dynamic, but the tradeoff with them is the masking of some of the finer details. I like these with the 5AR4, 5Z4 and since last weekend, the 274-B alike. It all depends on the input tube I use and whether it is a low-gainer 6SN7 or the 6SL7.
I'm thinking maybe the KT66 will offer the best of these two extremes (detail mining/delicacy and sound body/dynamics), with the proper rectifier setup. I'll find out soon. I'm using the stock 80 (5Y3) and 27 output tubes in the LP-27a, although I like the 56's here too.
Last edited by Musica Amantem; 02-11-2016 at 07:37 AM.
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