Yes, you can measure with a decent multimeter like Fluke or similar in AC volts and check the frequency as well, here you can see it: https://www.head-fi.org/threads/l-k-s-audio-mh-da004-dual-es9038pro-dac-van-dammes-double-impact.840938/post-14689266

In your case I would initially check if there is sound in the I/V converter resistors when you execute a test signal, for example 1khz 0db, from the result I would search backwards or forwards of this stage. The resistors are under the pcb, here these new ones were installed above...

I can assure you with knowledge and with many comparisons of dacs in the current market, that a well-tuned LKS004, is at the level $ 3,000 to $ 4,000 dacs, another thing is that you like dacs of renowned brands and designs not "made in china", otherwise this tuning will squeeze the most that two...

B0bb you have a restless soul, you always seek to improve, thank you for sharing your new projects

I bought these, are shielded 470nH: https://www.mouser.es/ProductDetail/Murata-Electronics/LQM21PNR47MG0D?qs=Gufeu08L%2Fl1%252BjocillWQvQ%3D%3D I have not installed them yet and I cannot speak of their effect, although Xoverman did do interesting tests with inductors. By the way, what brand are...

It is in the burn-out period, the positions were corrected for the LT regulator adjustment components, 1uf / 63v capacitors installed, here you can see how small the original Mundorf seems.

Ok thanks, I did not know about this condenser, I will install them in that place, I will have patience in the burning process.

Yes, right, that resistance should be behind in smd pads, I will correct it, the capacitor is soldered on the bottom side, I will put them as you say.

Some summer upgrades before tackling the "external power supply" project, all based on B0bb's recommendations from a few months ago. Basically higher capacity in some critical points and changes of 100nf mylar capacitors, and the Kemet Slit Foil of 10,000uf / 63v that have forced me to relocate...

B0bb, Xoverman, this is the electronic load that I have designed to test the supercapacitor module, I think it is enough to be able to see many parameters such as the dreaded charge noise of 350Khz, 5v are necessary for the oamp and the power supply of the visualizer display V / A (this will be...

En breve pondré las medidas de mi analizador de hp en las fuentes de alimentación, mientras me divierto con el pcb supercaps Maxim, estoy fabricando una carga electrónica ajustable hasta 10A con un mosfet de potencia y uno operacional entre otros elementos, sin esto no yo puede hacer pruebas...

Yes, I agree, audio fads come but sometimes they don't stay for long, until now the supercaps were for use in energy maintenance for volatile memories with little consumption, maybe and it is just my thought that it is not from Engineer, the only positive thing is the ultra low internal...

I only seeing if there is a reasonable performance possibility with the use of supercaps in the more noise sensitive dac supplies, 1300ma is a lot of current for only 175F, so look to get to 2x 3000F in series, maybe it would only be reasonable to use it for the 3.3v XO clock, batteries is...

Yes indeed that Maxim chip charges at a frequency of 350khz, in theory I did not see it as important because in the charging process the dac will be totally inactive, once the supercap is loaded, the pic would be notified of it by an input, disconnect the charging process and the oscillator, and...

I'm glad you can enjoy it, it turned out very well.