As someone with, I guess, not particularly audiophile ears I often wonder how people audition equipment such as headphones and headphone amps. Do you play a small passage of music and concentrate on, say, the bass and then switch equipment and play the same piece again? Or do you play the music for a more extended period, listen to the whole sound, and then switch? I speak as someone who often has difficulty in defining differences when auditioning. I often feel that the new headphones, for example, have just picked up some detail I've not heard before. I switch back to the other pair and the detail is there too. It impresses me when people hear differences in bass, mid-range, and top-end. I'd be very interested to hear how people approach their auditioning.