Hello, I just bought some er4s's which I was planning to use with a laptop soundcard. The Echo Indigo IO. Im thinking it will be fine but I'm not totally sure, because Im not sure how to match the specifications up. Analog Output [indigo] * 1 stereo 1/8" connector * Frequency...

sorry to hijack this thread, but... Im getting some etymotic er4s's in the mail soon but am wondering if they get enough power from my laptop if Im using an Echo Indigo IO. The soundcard seems like it could handle it judging by the volume it produces on other lame headphones but I want to...