i have some recollection of some very tacky demo rooms on the north side of the place lined with sound deadening stuff and altec was the brand they carried.i talked my bud into an audio research bryston combo but he didnt want to pay the extra for the jb's.....advance had infinity and most of my jb components came from western sound.most of the stuff in this book is geared toward pro/broadcast types as it is full of de essers,delay circuits,and even a b77 slow speed logger.i remember a tascam deck w/2 inch reels that sold for a hundred k and the specs on it were rated less than most consumer cassette players.i think it was +- 1db 20hz-15 khz and i still wonder if the trend toward super high freq response is just a wank