Alternative to M-Audio Delta 410

[lucpes]

For opamps OPA2134 - AU package or AD8620. First can be found for $3-4 the other is too expensive and not easily available.

Shunt the coupling capacitors=replace with a piece of wire (non-ferous resistance leads are great for this, or you might solder underneath the board to check). DC offset shouldn't be a problem but it's good to check at the output after mod.

OPA2134 - does not oscillate, does good with the +-12V power lines, DC offset without coupling caps is very low - 2mV and 3mV and the sq is just great. Not on par with the greatest CDP/DAC but should beat the hell out of any mainstream CDP.

Regarding the circuit layout - the 410 uses a different chip/DAC/ADC than the Revo, I can't remember if the front out is buffered or not, but the same 5532s for analog - locate the AKM chip - DAC and see what opamps are near to know what to replace; 470ufs for +-12V filtering should be replaced too with something better.

I had both in my PC for a while but come to the conclusion that the Revo sounds better - more dynamic (this was before mod). Sold the 410 a while ago so cannot comment on the layout.

[dunderchief]

So one last try.

Before this got off topic, I haven't seen an alternative for under 200 bucks to the 410. Anybody want to chime in? I'll be ordering in the next couple of days so....