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Wow what heavy transformers!I hate you Hemo. Any specs details?
What is the OPT core/Laminations? C core, HiB, nanocristaline? etc
Captainhemo I can see why you like the amps. Kevin is definitely a perfectionist. What speakers are you using? What speakers would you recommend with these amps?Thanks for sharing your experience. I know Kevin is working on a line stage did not know about these amps.
The output and interstage transformers are silicon iron. The input transformer (for balanced input) is cobalt amorphous core. The use of amorphous iron in the interstage transformer was an option. I found that the amorphous core transformers provided more access to superfine details, but thinned the sound out a bit as a trade-off. I preferred the body over the superfine details. Instruments seemed better integrated (but not smeared) in the soundstage with the silicon iron IT.There are four pairs of these amps in existence at this point; the pair Hemo is "borrowing" is the best sounding as there were changes to the power supply that improved the sound in that pair. I had no plans for making more if these, but could be persuaded otherwise if there was significant demand. They are a physically challenging build, with 3 separate 250VA Lundahl power supply transformers each and a 12 pound C-Core output transformer.
Once you start building Kevin's audio equipment, it is hard to stop.
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