Ok! Latest little mess about! Not really a fan of spdif, but as it's the universal connection to a dac, I though I'd have a play. Got this 1541a based dac on eBay with a fault. The original dac was a non a version and looked like a copy. Anyway, as I have a few of these chips about the place it was too hard to find the fault (scope is well handy!!).
As I can't leave anything alone, I set about some mods. Fet based reg on the filter, seperate STD 7805's for the receiver both analogue and digital, audiocom regs on the 3 supplies to the tda, loads of uF on the supplies, LME47920HA's decoupled with pans FM and bummed the horrid elco dc blockers for some ampohm's! How's it sound? a million dollars! Def worthy of a case and a bit more work ;-)
Couple if pics for those who like that sort of thing (that would include me!!)
"Leave Nothing as Standard" 
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