An A/V-adaptor board for the Commodore C128. This board is intended to connect to the Commodore C128 and use standard cables (audio, composite with RCA connector and/or s-video with a mini-DIN cable).
It also provides a 330Ohm resistor, which attenuates the s-video chroma line. This resistor can be bridged with a jumper.
Also an optional stereo output on pin 7 of the a/v jack (stereo sid, FPGA SID etc.) can be connected to the right audio channel. By default, this channel is also connected to the (mono) audio output.
This revision was required due to the obsolescence of the Lumberg BTOR1 RCA jacks. CUI Inc. RCJ-02* type conectors are used now. There are alternative RCA jacks from Keystone, which fit the same footprint (see BOM). Because of the new layout, a new case was required, too. There are recessions on the bottom shell for the solder pads, which have chancged in this board revision.