I was in the audio electronics industry for 30 years designing and developing all kinds of audio gear. This included a single channel analog microphone preamp (MS 1) and the first prototype (hand-wired by me) of an eventual short-lived digital audio product that Roger Nichols helped birth with us (PaqRat) - both of these products were used to record Walter's 11ToW album. Roger even let me borrow a Wendel II for about a year to play with. Great times.