[kx250rider]

The KV-20S20 was a bare-bones set, but noting wrong with it! Nice picture, and same CRT as in the upper end 20" models.

During the 90s, there were basically 3 line levels:

S or TS = basic TV set with some having basic mono (19") or stereo (20"-35") A/V inputs, but AFAIK all Sonys after the late 80s had remote standard with bigger than 5" tube. V = middle line TV with stereo, multiple inputs; XBR = top of the line with multiple inputs.

Not sure exactly how to decode the "KV-number-number-letter or (letter-letter)-number-number" system, but in the old system; KV-number-number-number-number-letter, it was this:

First two numbers = screen size; second two numbers = model; letter(s) = U-USA-only model (no "U" means USA-Canada-Mexico); R-remote, S-cable-ready; X-video/audio inputs; C-built-in MTS stereo decoder. That "C" only lasted a couple years, as MTS became standard on all of the X models with the new numbering system. "B" = high-resolution.

Example: KV-2675RS was a 26" set with cable-ready 160-channel tuner and remote. Had a stereo MPX decoder output socket, but not built-in stereo. KV-25XBR was a 25" set with multiple video inputs, built-in stereo decoder, and remote. This was the last of the old system, in which "X" included stereo.

The newer system seems still to use a similar letter designation, but I don't know how it works. Example: A KV-40XBR800 is a 40" set with multi video inputs, and remote, and the "B", I believe, still = high-resolution. A KV-27SXR10 was a 27" set with cable-ready tuner and built-in stereo, remote, and video inputs, but no high-resolution.

Charles