Crossfeed sounds like a gimmick, but when well-done (like Jan's implementation) it is a nice feature. The crossfeed on my Corda Jazz is analog, and while it's not entirely transparent, it's the best I have heard among many different headphone crossfeeds over the years. The crossfeed on the Soul is implemented in DSP. It has the same overall effect as the analog one, but is more transparent. Still not entirely transparent, it makes the music sound slightly more lean with a subtle emphasis on the upper midrange. One could correct this using one of the Soul's tone controls, but I find it too subtle to need correcting. I normally don't use the crossfeed. But those occasional recordings that have absolute L-R stereo separation can be really annoying to listen to on headphones. This also happens listening to movies. In this case, the crossfeed makes a huge improvement and the price of being slightly less transparent is well worth it.