P701
New Head-Fier
- Joined
- Nov 11, 2013
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Keep your output volume at 99% and lower your input volume to desired amount.
Keep the signal with -1dB or less in RMAA.
Keep the signal with -1dB or less in RMAA.
Keep your output volume at 99% and lower your input volume to desired amount.
Keep the signal with -1dB or less in RMAA.
I noticed that using the ELE DAC with my Xiaomi Piston makes them sound worse and there's a huge Hiss.
I wonder if it is the DAC impedance output + the low Xiaomi impedance. I did not hear that with my other headphones. 681 Evo (32 Ohm), 668B (56 Ohm) and KSC75 (60 Ohm).
Today I tried to measure the DAC output impedance, I tried... I couldn't get any proper results, when I try to get 1V my DMM goes crazy, it starts to measure 0.2V and 2 seconds later it is 3.5V xD. apparently the Hiss does not let the DMM works properly.
I also measured my Xonar DG output impedance, (that one was easy) It is 20.14 Ohm.
What kind of setting, load and test tone do you used?
I used a 60 hz sine wave file (made with audacity), my DMM, and a 46 Ohm resistor. I also tried with a 100 Hz tone and these online calculators to make sure.
http://www.sengpielaudio.com/calculator-InputOutputImpedance.htm
http://www.raltron.com/cust/tools/voltage_divider.asp
Seems alright. Since ELE doesn't have a gain stage, the PCM2705 DAC might not actually able to output 1V. I'll suggest you use 0.1V instead, as the actually voltage is less important. It is the ratio between load vs. unload that is important.
Hi, bumping this thread cause i got this http://www.ebay.com/itm/1PC-5V-USB-Powered-PCM2704-MINI-USB-Sound-Card-DAC-decoder-board-/361275171146?
from an auction at 3.8 euros, if i am right this is a diy ele d00, any recommendation on what mods should i apply on this?
My soldering skills are "ok" but i am bad with choosing what resistor/transistor etc i should replace(I am more of a software guy ).
If there are any mods available, your soldering skills have to be better than "ok". This board has all SMD components which are tiny. No regular caps to replace like the other boards. I would say, use it the way it is as the performance/price factor should be good if you paid only 3.8 Euros.
Well, my 1st intention was to use it as it is, i will hone my soldering skills and use it as an experiment board when i get a more "premium" dac.
Thanks for the advice.