I was one of the first to embrace the 4 channel format. Dynaco & Heathkit decoders then Quad reel to reels, 8 tracks,SQ,QS, CD-4 etc. I have transfered to a Alesis HD-24 HD recorder.I play these awesome quad recordings every day! DO YOU! CJ &b Fish, Captain & Me, Moody Blues,ETC. I record my own recordings all in Quad!I love QUAD