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Old 18th June 2004, 10:48 AM   #1
jelou is offline jelou  Belarus
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Default Any information and schematic about diy Boulder amp?

Any information and schematic about diy Boulder amp?
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Old 20th June 2004, 10:42 AM   #2
djk is offline djk
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http://members.psyber.com/dibsed//CIRCATS/je-990.pdf

The output stage of the Boulder is a CFP with a voltage gain of about 5.

25 years down the road, today's opamps are better than ever.

Considering how long it will take to make a pair of JE-990 from scratch, I would build the amp with a nice modern IC. That way you could listen to it while getting the other stuff together.

Be interesting to compare the two after you're done.
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