I recently purchased the Fiio X7 ii and noticed relatively loud popping sounds whenever connecting my IEM's. One channel measures 0.0 mv and the other measures 29.9 mv across the two pins that go into the IEM. From memory, it's best that the offset be less that 10 mv and ideally 0 mv...

I'm looking for an over the ear headphone to pair up with the FIIO X5.  I used HD558's for about a week and found them very fatiguing--to the point where I couldn't stand listening to the X5 anymore.  I've been using my Etymotics for a few days without any issues (probably due to a lot less...

One of the audio jacks on my ASUS laptop gives me a large "pop" when plugging in headphones.  So as a first check, I measured the DC offset between ground and the left and right channels, and found it was on the order of 1400 mV.  I'm not sure what an acceptable offset is for laptops, but this...