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Another interesting thing: why not a lot of people make the single ended hybrids? I understand that single ended output has very low efficiency but still: it is only about the heat dissipation. I have seen some single ended SS amp. There was a strange 20W Italian hybrid. The Czechoslovakian KR amp does some kind 20W-30W hybrid. Brazilian Eduardo de Lima (the guy that I like) does 30-40 single ended SS amp…. Still, if it is juts about heat dissipation… then come on. It is 21 century! I can see a nice 2 stages hybrid where first stage driver 150W-200W solid-state assembly.  I wonder what can I head something like this? A very high efficiency forced cooling, or even water-cooling… Nowadays it is really not an issue… Even if that amp would have 20% efficiency and for 200W it would burn 1kW then what would be a big deal!? We Yankees are gloater anyway. An efficient and smartly built forces cooler with 4”” flexible pipe running outside, similar what we use for laundry dryers, would be quite simple to implement.

The Cat

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