- #BEHRINGER UCA202 AUDIO INTERFACE LIKE SOUND CARD HOW TO#
- #BEHRINGER UCA202 AUDIO INTERFACE LIKE SOUND CARD MOD#
I ended up cutting the opamp's legs to remove it from the PCB. The result was that the PCB got so hot that one and a half pad delaminated from the PCB. I underestimated the strength of this glue: I was not able to pry the opamp off from the PCB while desoldering the legs. This was recognizable by the tiny red blobs of dried glue on the PCB at the long ends of the opamp. WARNING: In my soundcard, the opamp was not only soldered, but also actually GLUED to the PCB.
#BEHRINGER UCA202 AUDIO INTERFACE LIKE SOUND CARD HOW TO#
Unless ofcourse you know how to read datasheets. If your soundcard has another type, then you may consider not doing this modification. NOTE: The opamp types of the original opamps used in these soundcards are known to be either 4558 or 4556A.
If you are going to replace the opamp: Desolder the opamp. I did not choose to try that option because it was more expensive, untested and the results of using the less expensive AD8656 are more than satisfactory for me. NOTE 3: The original article mentions optionally using the possibly better performing opamp AD8397. The MSOP package may be better fit, but is cost 50% more than the SOIC package, so I just went with the SOIC. NOTE 2: I used the SOIC package version of the OPAMP. The only difference is the color of the housing. NOTE 1: The Behringer UCA 202 hardware seems to be 100% identical to that of the UCA 222. 2x 6v3 / 2200uf (I used 1600uF, as that was what I had laying around.) optional: 1x opamp AD8656 in SOIC package, costs about 3.30 euro a piece or 2.37 per 10 euro at Farnell A vice or something else to hold the PCB while working on it SMD soldering skills (mostly if you are going to replace the opamp) ESD protection gear (if you don't use it, you might fry your hardware) It retains its previously low distortion, similar noise levels, and most other characteristics." (.) The modified Behringer UCA202 has enough power to satisfy most anyone (.) And the output impedance drops from a very poor 50 ohms to only 2.5 ohms. (.) Using Ultimate Ear's headphones, the frequency response improved from +/- 7 dB to a much more neutral +/- 1 dB. A few other component changes were also required to optimize the new design. (.) The new amp can much better drive lower impedances at low distortion and generate much more output power from the same power supply voltage. While it can drive such phones fairly well, it's not very compatible with typical consumer 16 - 32 ohm headphones. "Behringer likely designed the UCA202's headphone jack for use with higher impedance studio headphones. Here's the article describing this particular hack in the deepest possible detail: Well, it's more an encyclopediog, than a blog, going by the size of his articles. If your into audio or analog electronics, then you'll love his blog.
#BEHRINGER UCA202 AUDIO INTERFACE LIKE SOUND CARD MOD#
The geezer that deserves all the credit for this mod is the "Northwest Audio & Video Guy". I am really impressed with the end result of this modification. For headphones with higher impedance, you may want to replace the opamp too. It improves the sound quality markedly on my low impedance headphones and, although this is a feature I did not need at all, increases the maximum atainable volume of your headphones.įor headphone with less than 50ohm, you only need to replace two SMD resistor and two through-hole capacitors.
This hack, for the Behringer UCA202 / UCA222 turns an already very good, and very cheap, USB Soundcard into a truly fabulous headphone driver.
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