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Original Message
RE: Alan Kimmel OTL
Posted by cpotl on January 19, 2014 at 09:12:04:
Input is 12AU7. The output tubes are JJ EL509S.
I just made the "lite" version, with four output tubes per channel. I wanted to fit the whole stereo amp onto one chassis, rather than two monoblocks each with a separate power supply chassis as in Alan Kimmel's original article. It is a bit of a squeeze, and there's an outboard fan at the back, and the heater toroidal transformer too, like a spare tyre on an SUV.
Chris