KT88 or 6550 tubes for Rogue 90 amp?


What are the sonic differences between the KT88 and the 6550 tubes in the Rogue 90 amplifier? My friend is ordering the amp Monday and would like to know the difference. I am not sure of the sonic differences between the tubes myself or how they sound in this amp. It will be used with a Rogue 99 magnum pre amp and Theil 1.4 speakers and Acoustic Zen wire.
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Showing 1 response by eagleman6722

I would like to throw in EL-34 tubes also in to this discussion. I bought a TAD-60 a couple of months back and just began tube rolling with some 6550 Tung Sol reissues. I had the original Svetlana EL-34's but now have biased and am trying the 6550's. Definitely a difference but, have not formed an opinion yet...

Eagleman