I'm curious about the TC-KA2ES. I haven't owned a cassette deck in many years, but if you're trying to get rid of it it might be fun to look at.
Great thread! I used to only buy Sony ES stuff, but I got fed up with their proprietary standards and got burned by Sony's first XBR SXRD television so I've since moved on. But along the way I've owned (and still have, in boxes)
STR-DA50ES receiver (one of the first AVRs with DTS decoding)
MDS-JA333ES MD deck
MDS-JA20ES MD deck
TC-KA2ES cassette deck
CDP-CX333ES 300-CD megachanger
DVP-S9000ES DVD/SACD player (this is the only one I don't have any longer)
RCD-W222ES 5-disc CD recorder
I just got my DA50ES out of storage to try out as an amplifier with a pair of Hifiman HE-6 headphones I just ordered. I'm curious to see how it does!