I have never trusted the components that were supplied with an ebay kit; figured all the functioning parts went to the assembled and tested boards. I have had good luck with starting with an assembled board and swapping most of the parts gradually.
Typically, the supplies on a dac are 9vac for analog on the dac chip, 9vac for digital on dac, maybe receiver chip, and 15-0-15 for the analog output.
Typically, the supplies on a dac are 9vac for analog on the dac chip, 9vac for digital on dac, maybe receiver chip, and 15-0-15 for the analog output.
Yes, and the middle one too... I expoxied them to the heatsinks after I soldered the regulator on without the heatsink attached... too low to use the mounting screw.
The supply transformer is 9VAC... So the board must be operating at a lower voltage than that.
Well, managed to get a partial refund for the DAC... And purchased this one... Assembled!
Maybe not the same quality caps, but now I have spares
Better RCA's, XLR's, and a simpler 9VAC input/rectifier section....
So some easy upgrades possible.
Already ordered a pair of Burr Brown mono OPA134's to compliment the Burson's. The easiest of upgrades!
If I can figure out how to desolder the dip8 Burson's from the other board!
Maybe not the same quality caps, but now I have spares
Better RCA's, XLR's, and a simpler 9VAC input/rectifier section....
So some easy upgrades possible.
Already ordered a pair of Burr Brown mono OPA134's to compliment the Burson's. The easiest of upgrades!
If I can figure out how to desolder the dip8 Burson's from the other board!
I would snip the leads off the board, then snip the adapter into eight parts, then individually remove those from the pins on the op amp module. I would wait and just use the sockets for them with the new board, at least for a long time until you are sure that nothing else will be swapped.
Those modules work pretty good with a 4.7uf 50v, right on the pins, under the board too, along with any smaller, film parts.
That new board looks pretty decent if it comes as shown, I have a similar one that uses an ak4495, I put a snubber circuit on each set of diodes too, smoothed out the sound, more details too.
Those modules work pretty good with a 4.7uf 50v, right on the pins, under the board too, along with any smaller, film parts.
That new board looks pretty decent if it comes as shown, I have a similar one that uses an ak4495, I put a snubber circuit on each set of diodes too, smoothed out the sound, more details too.
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