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bigpanda 17th February 2008 02:49 AM

quad303 pcb for renovation
I had some quad303 pcb's with me that's made to replace the original ones. Anyone interested can email me at

They are modified to use PNP-NPN for the outputs and TO-022 for the drivers.

bigpanda 5th March 2008 07:36 AM

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Attach is a photo :

bigpanda 7th March 2008 01:20 PM

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I think your Quad 303 deserve more than this, found on Ebay @ US$25 + US$10 shipping

bigpanda 31st October 2008 10:14 AM

a newer version
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I had some new boards for Quad303 in which I have added :

1. some mounting holes for new system builders.
2. Traces modified to take MJL's PNP+NPN. If you find appropiate
output pairs, you can snug them in and give a try. They can be
soldered onto the board directly (ideal for new system builders)
3. Some components relocate to spread better among available

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