space tech lab has many balanced preamps, some of his offerings use power tubes.
These look interesting, thanks. There is not a lot of information about them anywhere, can you elaborate at all?
Tube Pre-amp Suggestions.
I have a Coda No 8 power-amp and was looking for some suggestions on what would a good tube pre-amp that would pair up with it?
https://coda.cc/coda-no-8-amplifier
Thank you!
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If you can pull it off, build your own, using 6J5, or vintage #27 globe triodes. Use Mundorf coupling capacitors and metalized polypropylene capacitors in the pi network power supply with a Hammond choke on the grounded negative side. An amp costing 120,000 new uses electrolytic power supply capacitors which have to be replaces every ten years or less and have much worse ESR than polypropylene capacitors. One power supply for both channels has so little ESR that you will get a channel separation of over 120 db. |
@drbarney1 not me captain, I just fried mt power amp when I attempted to make some open baffle speakers...DUH! A pre-amplifier is WAY beyond my capabilities! How much would you charge to build me one! |
@kds there is user feedback on us audio mart, Canuck audio mart, and on YouTube and other audio sites. There is a review by Don sachs on audio asylum, though it is a little dated and space tech lab has higher models currently. I have a qa112eh preamp from space tech lab and it made my big Krell amp sound wonderful, which was very bright before the introduction of the space tech lab preamp. The space tech preamp is almost 20 years old as I bought it used about 8 years ago. |
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