Found this on ebay today (http://www.ebay.com/itm/BEVERLY-SILLS-ANDRE-KOSTELANETZ-MUSIC-OF-VICTOR-HERBERT-REEL-TO-REEL-TAPE-7-/400518705285?pt=Music_Other_Formats&hash=item5d40c67085). Quad is not indicated anywhere on the label. Angel release, manufactured by Columbia. But it does have the circle Angel logo, and was released in SQ on vinyl. It is presumed that the 8-track and cassette releases have SQ encoding, although the consensus is that getting a good quad sound out of it is difficult at best (azimuth, etc). But if we presume for the 8-track & cassette, is it safe to presume for the reel as well?