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Tiny DAC, Big Sound – Impression of Stoner Acoustics UD100 vs. ODAC - Page 17

post #241 of 302
1/16/13 at 7:26pm
Thread Starter 
Quote:
Originally Posted by spaark View Post

Anyone know what the output impedance is on these?

 

Oh, and ClieOS, could you post the measurements you did?

 

Quote:
Originally Posted by manu54 View Post

you are talking about the dac output ? 10 ohms j think

 

 

Already posted a while ago:

 

Quote:
Originally Posted by ClieOS View Post


I won't recommend it. UD100 has plenty of voltage, but it isn't designed to supply a lot of current. Also, with roughly 250ohm of output impedance, you will never get enough dampening. Plus, colouration will likely be a big issue as well.

 

Again, the output impedance is supposed to be this high on a DAC. The general rule is the input impedance of the amp should be minimum 10x higher, 2.5k ohm in this case. ODAC output impedance is around 500ohm and the recommended input impedance of 5k ohm.

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post #242 of 302
1/17/13 at 10:53am

please don't forget me and my problem, someone as any idee (page 16)

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post #243 of 302
1/18/13 at 11:09am

Thanks sawdin

 

I also do not have the technical background, but i am dissapointed and for the price I don t want to buy usb isolator or do mods on uae23, pfuuuuuu

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post #244 of 302
1/18/13 at 5:12pm

i do hear static from my UD100 when my laptop is being charged

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post #245 of 302
1/19/13 at 3:27am
Quote:
Originally Posted by mrAdrian View Post

i do hear static from my UD100 when my laptop is being charged

Probably something about your power source and the grounding. Does your computer has any metal? (rims, body, screws?) try touching it and if you can feel some power leak then it's definitely your power source.

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post #246 of 302
1/19/13 at 5:33am

Oh I'm very sure it is my power source. Once I disconnect my charger the unit runs very quiet.

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post #247 of 302
1/20/13 at 10:46am
Quote:
Originally Posted by mrAdrian View Post

Oh I'm very sure it is my power source. Once I disconnect my charger the unit runs very quiet.

One solution for you would be quite an expensive one.

http://www.ifi-audio.com/en/iUSB.html

 

iFi Audio iUSB. It provides clean power to your USB peripheral, which in this case the UD100 DAC. I've never tried it myself, however, they boast to have a lower noise floor than a 9V battery.

Try it out and tell us how it performs.

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post #248 of 302
1/20/13 at 3:35pm
Quote:
Originally Posted by penmarker View Post

One solution for you would be quite an expensive one.

http://www.ifi-audio.com/en/iUSB.html

 

iFi Audio iUSB. It provides clean power to your USB peripheral, which in this case the UD100 DAC. I've never tried it myself, however, they boast to have a lower noise floor than a 9V battery.

Try it out and tell us how it performs.

 

Hey thanks! I have considered adding an USB isolator but it doesn't justify the cost or the size. With that little noise I can just play some music and get away from it. If I am to critically listen to a song or two I'll just unplug the charger.

 

Just writing it down so people don't panic when their UD100 has some noise.

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post #249 of 302
1/20/13 at 6:13pm
Hi, I'm currently using the E7 docked to a E9 and was thinking of replacing the E7 with the new Hifimediy sabre dac with isolator. What would you guys think of the this combination with the E9. Will there be any compatablility issue with this combination. I've been following this thread and would appreciate some inputs from you guys which has more experience to help clear my mind. Looks forward to your thoughts. Thanks in advance.
Edited by Leo888 - 1/21/13 at 2:35am
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post #250 of 302
1/21/13 at 6:59pm
Thread Starter 
Quote:
Originally Posted by Leo888 View Post

Hi, I'm currently using the E7 docked to a E9 and was thinking of replacing the E7 with the new Hifimediy sabre dac with isolator. What would you guys think of the this combination with the E9. Will there be any compatablility issue with this combination. I've been following this thread and would appreciate some inputs from you guys which has more experience to help clear my mind. Looks forward to your thoughts. Thanks in advance.

 

You should be fine.

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post #251 of 302
1/22/13 at 7:24am
Quote:
Originally Posted by ClieOS View Post

 

You should be fine.

Hi ClieOs, thanks for chipping in. Appreciate it.

 

In your opinion, would the Hifimediy dac be an upgrade or side grade against the E7 solely as a dac. I'm also curious with the difference in the general sound signature between the 2 different dac chips used.The E7 being the only dac I've own and have always felt that it's a little peaky on the highs and would like to improve on this. Do you feel that the Hifimediy dac would give me the result I"m looking for. Lastly, I will appreciate your take in regards to the isolator used in the new Hifimediy dac. How much of a improvement will it gives compared to the older version without the islolator.

 

Thanks in advance.

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post #252 of 302
1/22/13 at 7:40am
Thread Starter 

Have not heard the Hifimediy DAC myself, but given the similarity of hardware between it and the ODAC, I'll say the improvement should be very noticeable.

 

USB isolator itself doesn't improve SQ. It is meant to remove noise from the USB port if there is noise. If there isn't any noise, then you won't notice it is there at all.

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post #253 of 302
1/22/13 at 8:03am
Quote:
Originally Posted by ClieOS View Post

Have not heard the Hifimediy DAC myself, but given the similarity of hardware between it and the ODAC, I'll say the improvement should be very noticeable.

 

USB isolator itself doesn't improve SQ. It is meant to remove noise from the USB port if there is noise. If there isn't any noise, then you won't notice it is there at all.


Great. Thanks for the input. I've not notice any noise from my usb port and so I think maybe I don't need one with a isolator after all. Thanks again ClieOs.

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post #254 of 302
1/24/13 at 7:32am

Two days ago Stoner Acoustic's last email to me said that they would ship the dac out shortly and update me with the tracking number. I understand that it will take quite some time to make it to my house, but how long did it take them to ship your guys' dacs? I'm fine waiting, I just wanted to know if they tend to ship it out a while before giving the tracking number, just so I can get an idea of when it will be here.

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post #255 of 302
1/24/13 at 7:41am
Quote:
Originally Posted by wes008 View Post

Two days ago Stoner Acoustic's last email to me said that they would ship the dac out shortly and update me with the tracking number. I understand that it will take quite some time to make it to my house, but how long did it take them to ship your guys' dacs? I'm fine waiting, I just wanted to know if they tend to ship it out a while before giving the tracking number, just so I can get an idea of when it will be here.

 

Took about three weeks for me, from Asia to Europe. Tracking number never worked. 

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