I got a Sony TC-KE500S and I found the repair manual covers the same model TC-KA1ESA (in USA). Wondering what differences are to be found between the 2 decks other than the name on the front? This one does have a metal flywheel unlike my 611S that had a plastic one (or 2?) but that may have been a closed capstan deck. I heard the specs for a S deck were supposed to be pretty high to qualify for the S chips by Dolby themselves but I'm not sure if there is a difference between these 2 decks other than maybe regional names. Did the ES get higher end components? 2 things I noticed off the bat were a diagonally mounted transformer and a grounded metal sleeve around both motors. Bare minimum design elements.