06-Dec-2010 03:06 PM
|Many thanks to Stefaan et al for the advice and comments concerning i.c's for the 66. I have now completed the project, and am delighted with the results.
However, having replaced the op. amps. with Burr Brown types, and the selector and switch i.c's with Maxim devices, it would appear that the multiple surface mount 4051's, used in the two hybrids per channel, form the weakest links in the audio chain. It would clearly be folly to attempt to replace these chips with higher quality types without access to highly specialised equipment - and possibly not even then! Thus my 'solution' is to leave well alone. I would be interested to learn of the experts' views and approach to this problem.