You have to post an Ebay message to Dennis and hope for a response.
My fave tube by far for the Firebottle is the Gold Lion reissue KT77. MUCH better sounding than the JJs for some reason...in fact the JJs put me off 77s until I read enough about the Lions to give 'em a shot. Great sounding tube in that amp. I (mostly) got rid of a weird low level hum (only in my RELs when cranked up much further than when in use) when swapping out a 5U4g for the 274B rectifier. Raymonda's experience with the older model Klipsch Heresy is interesting, but very different from my experience with Heresy IIIs...improved in 2006 with titanium drivers and a new 12...these speaker are magnificent sounding, with zero fatigue smooth treble, amazing soundstaging, and I have 2 RELs to cover the 58hz bass rolloff. Simply a well sorted coherent speaker that really sings, and 99db efficiency makes my little Had amp work like its supposed to, with no tendency to run out of gas.
My fave tube by far for the Firebottle is the Gold Lion reissue KT77. MUCH better sounding than the JJs for some reason...in fact the JJs put me off 77s until I read enough about the Lions to give 'em a shot. Great sounding tube in that amp. I (mostly) got rid of a weird low level hum (only in my RELs when cranked up much further than when in use) when swapping out a 5U4g for the 274B rectifier. Raymonda's experience with the older model Klipsch Heresy is interesting, but very different from my experience with Heresy IIIs...improved in 2006 with titanium drivers and a new 12...these speaker are magnificent sounding, with zero fatigue smooth treble, amazing soundstaging, and I have 2 RELs to cover the 58hz bass rolloff. Simply a well sorted coherent speaker that really sings, and 99db efficiency makes my little Had amp work like its supposed to, with no tendency to run out of gas.

