I just received my second EF2A - a replacement for the first one I purchased that had a mysterious "summing to mono" issue. This one seems to be working correctly. However, I have one issue with it - gain. With any IE type phones of even average sensitivity and impedance, I can barely get the volume control off the full off position before the volume is comfortably loud. In fact, in order to get the volume control far enough on so that it is tracking L/R channel balance reasonably well - it's too loud most of the time.
Is there any way to reduce the gain of the EF2A without resorting to "modifications" involving a soldering iron?