Coincident Technology Dynamo 34SE MKIII

The MKII version of that amp seems like a cool thing...I was on the fence between one of those and the Dennis Had amp I actually bought, but Had's amps are somewhat less available or at least rarely available anyway so there's that. Also, I currently prefer the Tung Sol 7581As over anything else I've tried in this amp including the excellent GL KT77s.

Have seen your comments in another thread  where you referenced the Tung Sols.Gonna get some,price is right.

When I hear (literally) how good many new tubes are, and how inexpensive they are relative to certain more "precious" vintage (or Chinese) ones, It makes me glad they exist. And yeah, a pair of 7581As are fairly inexpensive...I bought mine from "local" (MA) dealer Viva...another cool tube company.

@markwatkiss you are successfully using KT77s?  The manual states not to use different tubes.  Where did you purchase your Tungsols?

Oh, and would you say that the input tubes would be the first to replace?  Thank you!