It feels a little dull in my favorite setup, but with other headphones i got like HD650 / HD800 and Ultrasone Ed 12 , Stax SR-009 ( with sep. Amp )i feel the cross feed function do a little better work, but my liking is to have it set to off most of the time, for the best spacious and out of the head feeling.
How do you use cross-feed through an external amp for SR-009? I thought cross-feed is available only through headphone out.