True that, it's a very unusual plug, but I thought it was quite smart implementation of balanced XLR in a very small device. It's actually a very nice plug to work with, feels solid and satisfying to use. Anyway thanks for the reply, I might just look for a new head amp with regular XLR...

Someone on Reddit told me they may be wired specifically for their IEMs 'RHA CL1' which may not be the same as a normal balanced xlr output. I dunno, I've wrote RHA and hope they will shed some light. Seems weird to me that they would use a 4-pin xlr differently than every other company, but...

Hi guys, I own a pair of HD600 that I am very happy with, I then decided it was time to treat the headphones with some new upgraded cable, and since my RHA DacAmp L1 have a balanced 4-pin mini xlr output, I went with a Mini-XLR cable that came with some adapters for other types of plugs. The...