Search found 180 matches

by wushuliu
Mon Sep 16, 2019 9:24 pm
Forum: Computer Audio
Topic: Another interesting r2r dac
Replies: 123
Views: 16083

Re: Another interesting r2r dac

Looks like at some point Audio-Gd released a new version of their module - the DA-8. Looks a lot nicer. Not clear what the difference is between the previous though:

http://www.audio-gd.com/Pro/diy/DA8/DA08EN.htm
by wushuliu
Sat Aug 17, 2019 3:56 am
Forum: Computer Audio
Topic: Soekris Dam Dac
Replies: 865
Views: 81949

Re: Soekris Dam Dac

Hey Nige, I opted for the BC550/560 mod on the vref opamps. Not going to try the Lifepos there, too skittish. But I am trying to decide if its worth removing the +/-5 regs. Currently running +/-9v from a two stage PS:TPS47whatsit reg-->Lt3045s-->Dam. I can modify it to supply the dual 5v to the reg ...
by wushuliu
Fri Aug 16, 2019 3:13 am
Forum: Computer Audio
Topic: Soekris Dam Dac
Replies: 865
Views: 81949

Re: Soekris Dam Dac

Never, mind found a way to connect to the Xilinx. If what I hear so far holds up then doing a flip flop followed bypassing/removing the isolators is the best mod I've done so far.
by wushuliu
Fri Aug 16, 2019 12:14 am
Forum: Computer Audio
Topic: Soekris Dam Dac
Replies: 865
Views: 81949

Re: Soekris Dam Dac

Hi guys, got an SOS here. I was in the process of removing the isolators based on Randy's photos when I accidentally pulled up two of the pads. Then I realized I don't actually know where the heck the pinouts are supposed to go!!! Anyone know where I else I connect to? Pic attached.
Isolators.jpg
Isolators.jpg (172.87 KiB) Viewed 979 times
by wushuliu
Fri Jan 25, 2019 5:56 am
Forum: Computer Audio
Topic: Soekris Dam Dac
Replies: 865
Views: 81949

Re: Soekris Dam Dac

My previous grumpy post aside, the 1121 is now almost too cheap to pass up. Just a few dollars more than the 1021. I will probably get one since it seems like it may outperform the 1021 plus more power supply flexibility and less modding/removing components required.
by wushuliu
Thu Nov 15, 2018 11:31 pm
Forum: Computer Audio
Topic: JPLAY FEMTO
Replies: 8
Views: 2697

Re: JPLAY FEMTO

Big thumbs up to Jplay Femto... worth every penny.
by wushuliu
Wed Oct 17, 2018 5:43 pm
Forum: Computer Audio
Topic: Soekris Dam Dac
Replies: 865
Views: 81949

Re: Soekris Dam Dac

Somewhat random post, but it suddenly occurred to me: has Soekris ever actually *thanked* anyone for helping to improve his dac? After all the effort people put in to convince him the first version needed improving, I don't think I've ever seen him express any thanks/gratitude/anything.
by wushuliu
Tue May 22, 2018 9:51 pm
Forum: Computer Audio
Topic: Battery Power Supply
Replies: 168
Views: 20941

Re: Battery Power Supply

Not sure if this a good deal or not, but may be worth taking a look at for battery. Ships worldwide.

https://www.ebay.com/itm/4-HEADWAY-3812 ... SwUYNaS8aC
by wushuliu
Wed Feb 07, 2018 4:37 am
Forum: General
Topic: Go BIG or go HOME... Class A amplification done Lifepo4 style
Replies: 92
Views: 8484

Re: Go BIG or go HOME... Class A amplification done Lifepo4 style

*peeks in thread*
backs away slowly...
by wushuliu
Thu Jul 13, 2017 3:25 pm
Forum: Computer Audio
Topic: Another interesting r2r dac
Replies: 123
Views: 16083

Re: Another interesting r2r dac

This silly cheap DAC has had a little work done. Replaced the main caps which does adds some refinement. Last night I added A LT3045 5v power supply. These super low noise supplies just get smaller and smaller! So small I just have it tacked to the bottom of The dac and powered by a cheap wallwart. ...