For the time, WNAP had noticeably better sound quality than competing stations (they seemed to compress sounds that are much more noticeable when multipath distortion is also present). What processing did they use (in detail if possible) and what might I use to duplicate it today (including emulating Dolby, compression, and echo effect). I recall the echo effect as being very "mellow" and "airy" not "boxy" like some echo characteristics that I hear on some stations today (e.g. bloomberg radio). Also, did they always use stereo (widely separated) voice mics or was that only occasional?