Username 0 Report post Posted April 14, 2005 Heady: I dont think those are the JRC4556, those are TL072CN an extremely cheap OPAMP which can be use to test the circuit without risking ka-putting more expensive OPAMPs. I just realise the gain on my CMOY is too high. back to soldering iron. Share this post Link to post Share on other sites
jasonhanjk 0 Report post Posted April 14, 2005 http://sg.farnell.com/jsp/endecaSearch/par...U=3458118&N=401 One of the grandfather audio opamp, KA4558. Beat that at $0.75. Share this post Link to post Share on other sites
heady 0 Report post Posted April 14, 2005 Heady: I dont think those are the JRC4556, those are TL072CN an extremely cheap OPAMP which can be use to test the circuit without risking ka-putting more expensive OPAMPs. I just realise the gain on my CMOY is too high. back to soldering iron. username, thanks for the tip re: the opamps. I used to use the gain of 11 as per the web site but I now realised that if you use line-out from CD player, 11 is too high. My earlier CDP had no line-out. I now use a gain of 6. Share this post Link to post Share on other sites