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In Reply to: RE: If you want simple posted by Doublej on September 22, 2014 at 09:39:48
Hybrid tube/mosfet. Sounds wonderful on Quads.
"We are all in God's hands... and God is a malign thug."
-Mark Twain
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My NAT has a simple circuit and a sophisticated power supply. The main circuit is a tube for voltage gain, a tube for a driver and ONE big industrial MOSFET for the output stage (yes it's single ended). THat one big MOSFET is strapped to a very large heat sink. The power supply is sophisticated in that it uses active regulation even for the output stage (another identical industrial MOSFET on it's own huge heat sink), choke filtering (4 chokes!) and monster power transformers with and a lot of uF of capacitance.
The circuit though is super simple, direct coupled (no caps or transformers in the path) and no negative feedback.
Not quite as simple as a SIT from Pass but not too far away.
Croft gear gets knocked a lot for how it measures, not how it sounds. First Watt gear gets praise both for good sound and for good measurement (in conventional terms).
Observe, before you think. Think before you open your yap. Act on the basis of experience.
Might be a little underpowered for my speakers. But then again, the old Cyrus II integrated is almost the same power and seems to be fine, unless I really want to cut loose and crank the tunes (which seems rarer and rarer these days!). Just need more resolution at the power end of things (the table and speakers can deliver)...
Dman
Analog Junkie
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