KT66 Genalex Gold Lion gold pin power tubes.
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Genalex KT6627 September 2020Great sounding audiophile valves. Compared these with EL34 (varies brands), the original GEC 6L6GC, 6V6 and KT150. The Genalex KT66 were exceptionally clean without that midrange emphasis that is often said with the EL34. The KT150 just sounded little muddy in comparison. All compared (A/B switch) in a fully balanced PP amplifier in triode mode. Cathode current and plate voltages adjusted to the recommended datasheet specifications for each valve compared with. Highly recommended for audiophile listeners – will be ordering another quad for my next build.