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Weird interferences from Windows - xonar essence stx - Page 2

post #16 of 18
Quote:
Originally Posted by mbphotox View Post

So I could use a DI box (active or passive?) And take XLR-RCA cables to feed my headphone amp?

Typically overkill, but yes.  How you would wire the XLR>RCA differs depending on the specific DI box.  

 

Why would you even consider an active DI?  The key here is something called "common-mode rejection ratio".  A transformer has that, even the cheap ones, and to a fairly high degree.  An active box has to fight some pretty tight component tolerances and selection to achieve CMRR even close to a transformer, so the good ones are expensive.  Then you have to be concerned with the cable wiring. Some boxes require cutting the wire to XLR pin 3, others don't. 

 

Here: this is what I use, I thought it was discontinued, but it's still available.  I've tested it, its frequency response is flat down to 20Hz.  Used them for years, and keep several handy. 

post #17 of 18
Thread Starter 
Thanks.. no chance to get this in switzerland. Will get a quality passive DI box from Behringer then.

I don't mind spending 60-100 bucks for this as I listen to music nonstop while working.
post #18 of 18
For a passive DI, XLR-f to RCA wiring should be: XLR pin 2 > RCA center, XLR pin 3 and pin 1 tied together and to shield and RCA outer.
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