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My second Dennis Had amplifier in-progress. Dennis' amplifiers sound sensational with my Omega Super Alnico HO monitors. Highly recommended!I'll likely end up selling my other Dennis Had Inspire KT88 IFA-1 amplifier with Blue Alps volume control in the near future.Tim
I'm using mine with an LP-27a and a DAC only right now. It feeds a pair of Altec two-way speakers (99dB, 414A, 802D, 32A). It does not sound romantic or old fashioned. I'm running it with RCA 6V6GT's right now (about 10wpc) and it has more power than I can use in my small room. Dennis tells me the GL KT77's are the bomb with this amp (probably 16-20wpc) but I haven't tried them yet.I still haven't optimized it yet, but in my system with 99dB 12" alnico drivers running with no crossover the impact is tremendous. I haven't tried it on my SAM yet, but I'm sure it would be killer. If I hadn't already put so much effort into the Altec's I probably would have gone straight to Alnico 1.5's.
I've tried lots of EL34 types new and OS and the reissue GL KT77 are probably the best overall (SET with James OPTs, ~7wpc). They are the only new production tubes I'd buy right now. I've also tried lots of drivers and Broski's Aikido circuit is fantastic, he also has an EL34 SET circuit but it's normal/ordinary with the exception of a cap based voltage divider to cancel PS noise. I'm running 6SL7 > 6SN7 > KT77 right now...