New M-dac power supply

[Mr Perceptive]

Although the MDAC is very popular, the addition of the PSU takes it into another ballpark with other competing DACS. At the MDAC+PSU level, one should audition the Wired4Sound DAC2 and the Leema Elements DAC as well. All IMHO of course!

[realysm42]

Fair enough, I won't be auditioning anything for some time, personally

[sq225917]

Martin, i haven't had any mods done to it. I sent John 20 op-amps last week for him to play with upgrading other people's units, I'm in no rush- what with having the Weiss.

[realysm42]

Cool, were they all the same or a selection to help him make a choice on the best one for the unit?

[Sovereign]

Simon, you got the Soveriegn upgrade in your M-dac?

It's like speaking to a f*cking brick wall on that other forum, I either get ignored or told to trawl entire threads to find things...

I'm not sure what John did to my DAC, I have it on an email somewhere, I think he upgraded the power supply around the chip or something.
It definitely sounds more involving, clear and dynamic.

[realysm42]

You're the guy the upgrade is named after?

I've tried repeatedly to speak to JW himself and ask other people about what needs to be done to make it happen or if it's even an option to wider audiences; it's like I'm not there lol!

[sq225917]

I'm not sure if it was the AVCC or the VDD voltage rail that he modded, I think it was the 1.2v rail for the VDD. Either way he's implemented a better regulator and moved the Kelvin sense point for the regulator so that it isn't polluted by the gnd plane noise.

The op-amps I sent were all the same, so that eh could mod a few test units for people. The mod isn't something you could do for yourself, not on a 4 layer smt board. I wouldn't try to do it myself and I've built loads of smt stuff.

[Sovereign]

You're the guy the upgrade is named after?

I've tried repeatedly to speak to JW himself and ask other people about what needs to be done to make it happen or if it's even an option to wider audiences; it's like I'm not there lol!

I'll see if i can dig out the email from John for you. I haven't been back to the thread since I made my post of my findings of what John did to my DAC, I find the MDAC threads a wee bit tedious.
I'll see if I can get the email up here tomorrow for you.

[Sovereign]

Cant seem to find what John W did to my DAC on email, he must have let me know what he did on one of the MAMOTH threads, sorry....good luck!

[realysm42]

Cheers for looking dude!