⭕ The EMI TG12345 MKIII Side Car in my studio. Has the following configuration.

Every input and output appears on the back of the unit as well as the patchbay.
The patchbay is a 1 space TT to ELCO external unit. (included are the patchbay and three 15 Mogami cables)

Looking at the console from left to right it has the following Cassettes (stereo modules)

EMI TG12345 MKIII Side Car specs are as follows-

From left to right --
16X2 Summing cassette made by EMI for EMIs Studio in the Netherlands , This is were the TG12345 MKIII that I own came from.

This 16X2 summing cassette has 16 line inputs with pan and volume control , to a stereo direct out or to the Master Stereo 2 buss ( EMI Main 1 Cassette- far right)
This Cassette also has balanced CUE sends out , receiving the cue buss from the cassettes with cue sends. (each channel of each Cassette has 2 cues send)

Next are the 2-Mic Cassettes ( all Cassettes are stereo) Mic or line inputs can go into
this cassette.The EMI standard in 1969 was 0db at 200 ohms output for a .447 output
voltage.