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Old 5th March 2011, 06:13 PM   #1
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Default Wanted: Vacuum Tube Phono Preamp for PAS

A friend, who is a novice builder, recently acquired an unmodified Dynaco PAS preamp. I have suggested an easy-to-build vacuum tube line stage that will run off a modified and updated PAS power supply but have not yet found an easy-to-build, good-sounding DIY MM phono stage that will also run off the PAS power supply. Any thoughts? Any schematics?
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Old 6th March 2011, 02:03 AM   #2
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Default RIAA this way.

Quote:
Originally Posted by the full ranger View Post
A friend, who is a novice builder, recently acquired an unmodified Dynaco PAS preamp. I have suggested an easy-to-build vacuum tube line stage that will run off a modified and updated PAS power supply but have not yet found an easy-to-build, good-sounding DIY MM phono stage that will also run off the PAS power supply. Any thoughts? Any schematics?
The Morgan Jones 'Valve amplifiers' book has an excellent bunch of info and circuits on this. I highly recommend reading it before moving ahead.
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Old 6th March 2011, 02:50 AM   #3
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Hello,
Take a look here, good stuff for the PAS. It has been years.
CURCIO AUDIO STEREO-70 AMPLIFIER MODIFICATION

DT
All just for fun!
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Old 6th March 2011, 03:57 AM   #4
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Norman Koren -- famous for photography -- nice Dyna mod:
Norman Koren Vacuum tube audio page
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Old 6th March 2011, 04:09 AM   #5
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Thanks to everyone for their suggestions. I think the Curcio mod will be the easiest for my friend to implement so that is the one I will recommend.
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