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Old 10th September 2011, 02:05 AM   #31
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Join Date: Aug 2011
Quote:
Originally Posted by Rembrant View Post
You don't need to. The PC power supply has +12, -12v, and ground. The molex has +12, +5 and ground. You can tap the -12v from the board connector.
Tapped it. Needs extra filtering, but will do the trick while the project is still on the proto-board. Abandoned biasing altogether. Will build a proper PSU when it's done.
Quote:
Originally Posted by jcx View Post
also check out The Objective2 (O2) Headphone Amp DIY Project

the associated home page links to pretty complete design Blogs on parts selection, parallel op amps and lots more
This is probably the best advice. Learned a lot. Adopted the basic idea. Enough said.
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