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Old 19th May 2011, 02:02 AM   #1
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Join Date: May 2011
Default balanced RIAA amp

Does anyone have any info on a differential front-end RIAA preamplifier using 12AX7's that appeared in Wireless World/Electronics World. Author was Morgan Jones.

There is a diff-input amp in his "Valve Amplifiers", but it was very complicated and used a lot of difficult-to-obtain parts.

If anybody knows something about this amp, I would be very grateful!

Best,

Bob McIntyre
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