Impecable soldering as always @sworder84 😅 Check the joints before powering it up.
For digital V, use only +5V. And use the ground from that plane. For analog use both +-5V and ground from that plane.
For digital V, use only +5V. And use the ground from that plane. For analog use both +-5V and ground from that plane.
You can use the same old psu1 or psu2 from here, just populate and utilize the ones you need. No need to make experiment with any other psu.
P.S. proper temperature, little contact time, and good solder is all you need. You have a lot of whiskers on solder joints, which indicate some of those mentioned things are not applied 🙂
P.S. proper temperature, little contact time, and good solder is all you need. You have a lot of whiskers on solder joints, which indicate some of those mentioned things are not applied 🙂
I want to add the separate power supply for opamps too. It will improve the sound quality. That's why I look a different psu and transformers.
Yeah, I know but Nichicon 6800uF are expensive for example. As for PSU-2, I can't get LT's - there nowhere to buy them in my country. I always use PSU-1.
Buy the way - I build a new Diy power amp for myself now. I want to change my Cyrus on more quality amp. So I need money there😉
Buy the way - I build a new Diy power amp for myself now. I want to change my Cyrus on more quality amp. So I need money there😉
@miro1360 without loss of quality?
I found on ali
https://sl.aliexpress.ru/p?key=R1qet8r
But he need a little modification for 5V. I can feed Dac and opamps from one board.
I found on ali
https://sl.aliexpress.ru/p?key=R1qet8r
But he need a little modification for 5V. I can feed Dac and opamps from one board.
@sworder84 That is the question 
... In general, that regulator will do a lot of work, but the more filtering, the easier it has. I think that there should be no audible loss in sound quality (with my regulator) 😊
... In general, that regulator will do a lot of work, but the more filtering, the easier it has. I think that there should be no audible loss in sound quality (with my regulator) 😊@sworder84 how would anyone be able to answer that question? First you would need to have both to compare, second you say it would need to be modified. One way to find out, order both and try them. Or make a decision based on the information you have. Looks to me that the PSU-1 is the way to go looking at the available information.
I honestly don't think there would be any audible difference between the two. It's up for trial, whoever makes it both 🙂
In continued research into various OPAs I tested the OPA1656 dual opamp in my line preamp. The single version for Miro DACs is the OPA1655. A SOIC/DIP8 adapter is of course required. An even better sound than the OPA1612(1611) was obtained, especially in the bass section. The sound of OPA1656 was particularly liked by @mikorist in his PC sound card. 😎
You know what's even better......No adapter at all and bypass caps at the legs!!!😉
