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y1 gamma-1 DAC - Page 36

post #526 of 1537
3/27/09 at 12:52pm
Quote:
Originally Posted by t0dy View Post
Yeah, the EURO one looks good. Costs only $5.50 BUT the total price is $22, my god... And it says: "We cannot accept your order on-line.
Please print your order and either email (allcorp@allcorp.com) or fax (818-781-2653) us your order. You will receive a shipping quote."

Does anyone know where I should start looking for a suitable power supply for the y1 in Sweden or in Europe with not-so-darned expensive shipping?

Thanks!

About the phone chargers, I'm not really sure what you mean. Do you mean power the y1 via USB cable from computer and then use S/PDIF to stream the data?

EDIT: Oh, you mean a wall wart with USB output? Should this work you mean? Please confirm so I can say WOOHOO!

you can say woohoo; that will work if you have one already. anything that powers by USB is therefore getting 5v through the USB cable well in general. thats part of the USB standard. any powered USB output; even the one containing the audio signal should also power the Y1 if i'm not mistaken, so you shouldnt have to use optical or coax; but IMO both SPDIF sigals are superior anyway, so if you can use one of them you are coming out on top. the Y1 has to be able to be powered over USB for use with a laptop. but not all USB ports will supply enough or steady enough power especially if they are part of a hub that is powering other devices
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post #527 of 1537
3/27/09 at 12:57pm
WOOHOO!!

I was definately too "insnöad" on getting a real linear regulated 5V 100mA adaptor -> keep it simple, stupid! (@myself)
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post #528 of 1537
3/27/09 at 2:45pm
Quote:
Originally Posted by t0dy View Post
Yeah, the EURO one looks good. Costs only $5.50 BUT the total price is $22, my god... And it says: "We cannot accept your order on-line.
Please print your order and either email (allcorp@allcorp.com) or fax (818-781-2653) us your order. You will receive a shipping quote."

Does anyone know where I should start looking for a suitable power supply for the y1 in Sweden or in Europe with not-so-darned expensive shipping?

Thanks!

About the phone chargers, I'm not really sure what you mean. Do you mean power the y1 via USB cable from computer and then use S/PDIF to stream the data?

EDIT: Oh, you mean a wall wart with USB output? Should this work you mean? Please confirm so I can say WOOHOO!
Yes the edit part is what I meant, however you could also use the computer usb as a power source only. This is actually what I do with mine at home cause I use the spdif output from my computer for the input but have the usb cable connected to power it so that I do not use up a spot on my power strip.
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post #529 of 1537
3/27/09 at 3:09pm
Quote:
Do you know where to find cheaper wall warts suitable for the y1?
Farnell.
(# 1176284 is one example)
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post #530 of 1537
3/27/09 at 3:13pm
Quote:
Originally Posted by t0dy View Post
WOOHOO!!

I was definately too "insnöad" on getting a real linear regulated 5V 100mA adaptor -> keep it simple, stupid! (@myself)
No, you were fine.
You just need to learn to listen to what people tell you.
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post #531 of 1537
3/27/09 at 3:24pm
The only reason we selected that AC adapter is because it has a 1.3mm plug.
Bench testing has suggested that a linear regulated power supply wins every time.

Quote:
Originally Posted by m1abrams View Post
A linear adapter provides less noise in most cases than a switching. Switching is cheaper, smaller, more power efficient. Not sure how much the y1 would benefit from using a cleaner linear supply? Since AMB recommends a switching supply and the power you get from the USB comes from a switching supply I suspect you would see little benefit using a linear supply.

AMB has recommend supplies on his site.
USA - 5 VDC 1.6 AMP SWITCHING POWER SUPPLY | AllElectronics.com
Euro - 230V EURO SWITCHING SUPPLY, 5VDC 1A | AllElectronics.com

HOWEVER - note that the neat thing about the gamma1 is that it can be powered by the USB even if you are using the SPDIF input. You could use one of the phone charges you may already own to power it via USB and have your input on one of the SPDIF inputs.
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post #532 of 1537
3/27/09 at 3:24pm
Quote:
Originally Posted by m1abrams View Post
Yes the edit part is what I meant, however you could also use the computer usb as a power source only. This is actually what I do with mine at home cause I use the spdif output from my computer for the input but have the usb cable connected to power it so that I do not use up a spot on my power strip.
Yeah, I'd do that as well when connecting to my computer if I want to try if the S/PDIF sounds better, but when wanting to connect the DAC to another source, away from a computer, a wall wart is needed for me.

@MisterX; thanks for the link! I must really suck on finding the right ones (searched for 100mA ones). Anyway, does the 1176284 one come with an adapter for use in Sweden, because it's a UK input connector attached on the picture.
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post #533 of 1537
3/27/09 at 3:29pm
Yeah, I noticed that one had a UK style plug in the picture.
Unfortunately the datasheet is not much help.
Will see if I can find you another one.....
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post #534 of 1537
3/27/09 at 3:36pm
Hey MisterX, you're very helpful! Thank you for all the help!
It will be a pain ordering from Farnell though, everything they sell is listed without taxes and they sell only to companies as far as I can tell, not private persons.
A linear regulated sounds like the best bet since your bench testing proves that, and I wouldn't really want the wall wart to limit the wonderful DACs potential! (even if it's little )
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post #535 of 1537
3/27/09 at 3:58pm
Quote:
Originally Posted by VncentValntine View Post
Hey, so I'm also having the "USB Device Not Recognized" error. All voltage readings are correct, and I've checked/re-flowed all the solder... How easy is it to fry the SMDs? There isn't much on this board, what did I do?
Did your y1 ever work via USB before? If this is a new build then most likely there is either a solder joint problem or U2U is the wrong part. It would take quite an electrostatic shock to damage the chips, but you should nevertheless take standard ESD precautions when handling them.
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post #536 of 1537
3/27/09 at 3:59pm
t0dy: PMed you a RS link instead.....
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post #537 of 1537
3/29/09 at 8:30pm
hello,

while the headwize forum is still down. I have a weird issue with foobar and the y1 DAC. Here's a copy of a post i made in the foobar support forum. Has anyone encountered a similar issue? thanks

----------------


Hello everyone,

I have a problem. I recently built a USB DAC (The γ1 Modular Miniature DAC), and it functions as an external soundcard.

The problem is that after about 3-5 hours continuous playback on foobar, the computer will hang with the black screen.

I thought that it was a hardware issue, but (1) I built 2 of these and both have the same problem; and (2) This does not occur with any other program (can play continuously with e.g. VLC media player).

However, it seems odd that foobar and the USB DAC would cause some conflict only after a set time, often in the middle of a track.

Could someone please advise? I'm loathe to use any other music player.


Many thanks in advance.
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post #538 of 1537
3/29/09 at 9:53pm
Windows vista?
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post #539 of 1537
3/29/09 at 10:10pm
Here's a question for you Mac users. I'm using my Macbook as my digital source, via the toslink optical out to my gamma. I've setup the Audio Midi output settings to 24bit stereo, 96kHz output for the optical out. The question is, how does this system handle 16bit 44.1kHz media? Does it "upconvert" the file before sending it to the gamma? I'd like for the system to play the media in it's native resolution without any upconverting or downconverting, etc. Does anyone know exactly what's going on on the Mac side of things with this setup?
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post #540 of 1537
3/29/09 at 10:23pm
Quote:
Does it "upconvert" the file before sending it to the gamma?
Yes, setting the software to output a 24/96 signal causes re-sampling.
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