y1 gamma-1 DAC
Jul 15, 2009 at 9:06 PM Post #766 of 1,546
Quote:

Originally Posted by MrSlim /img/forum/go_quote.gif
Has anyone compared the SQ of the y1 when using USB power vs a high quality 5V dedicated power supply(or not so hight quality, ala wallwart)?

I expect this may become more apparent when the y1 is coupled with the y2...



I have used a regulated battery power supply for it and don't notice a difference with the Y1. Also used the recommended wall wart and don't hear a difference.
 
Jul 16, 2009 at 9:01 PM Post #767 of 1,546
Hey Now,
I just went to pull the trigger on my Mouser order only to discover the FK24X7R1E105K caps are back ordered. Can I sub in FK22X7R2A105K? The only difference I can see is 100v vs 25v working voltage.
Thanks,
Bill
 
Jul 16, 2009 at 10:36 PM Post #769 of 1,546
Quote:

Originally Posted by amb /img/forum/go_quote.gif
The FK22X is physically too large to fit.
EDIT: You can use Mouser #810-FK24X7R1C105K as substitute.



Thanks so much!
Project ordered.
 
Jul 21, 2009 at 4:24 AM Post #770 of 1,546
Does anyone have a Mouser BOM I can use to paste into their BOM tool, for either the Full or Lite config? If you have created a "project" at Mouser for either, that would be even better. If not, I'll be creating them to share..
 
Jul 21, 2009 at 10:02 AM Post #771 of 1,546
Quote:

Originally Posted by MrSlim /img/forum/go_quote.gif
Does anyone have a Mouser BOM I can use to paste into their BOM tool, for either the Full or Lite config? If you have created a "project" at Mouser for either, that would be even better. If not, I'll be creating them to share..


Here is what I have, the receiver is missing due to backorder

730df291c4

Link

Edit: receiver added, still on backorder though. Digi-key has it in stock.
 
Jul 21, 2009 at 10:21 AM Post #772 of 1,546
Are you planning on fixing that?
wink.gif
 
Jul 24, 2009 at 8:31 PM Post #775 of 1,546
Just a heads up, TORX147PL is back in stock at Digi-key. Unfortunately, not the TOTX147PL. You can still get it from Newark or Farnell, or use the module from Sys Concepts I linked in post #752 above.

I should have PCB v1.01 very soon, which will also support the Sharp GP1FMV31TK0F (Digi-key 425-2605-5-ND).
 
Jul 24, 2009 at 8:43 PM Post #776 of 1,546
Yep, I chose the option to have my order held until that part was in and could ship.

My email from Digikey said that the TORX would be available approximately July 31. I guess it's approximately close enough as they show 1,160 available just now.



EDIT: I just now recieved email confirmation that my order has been shipped today.
 
Jul 28, 2009 at 11:02 PM Post #777 of 1,546
Just finished my y1, and am listening to Fourplay through iTunes and my

PPA as I type this. Worked first time. Very nice. Clear and detailed with

plenty of punchy, low bass. I'm using the Silmic II's on the output

bypassed with these 505-mkp20.1/100/5.

I did the full++ in the B2-080 case, but don't yet have the Toslink parts.

Can't wait to add the y2 board.

Thanks Ti for another great design!!
 
Jul 29, 2009 at 8:16 AM Post #780 of 1,546
Quote:

Originally Posted by MrSlim /img/forum/go_quote.gif
Has anyone compared the SQ of the y1 when using USB power vs a high quality 5V dedicated power supply(or not so hight quality, ala wallwart)?

I expect this may become more apparent when the y1 is coupled with the y2...



I've found that a regulated supply sounds noticably "better" than USB supply on my y1. I normally have it powered by a linear regulator (a rudimentary 7805-type jobbie I built), and when I unplug it and it automatically switches to USB power, there's a noticable (if subtle) deterioration in audio quality. And vice versa.

I should add that I'm not especially golden-eared.

I should further add that even when USB-powered, it sounds much better than a motherboard or laptop audio-out.
 

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