Those are the EML 300's. Sort of EML's controller compliment to the 200.Sir Ruff wrote:
oh man... I love how old skool and lab-like that looks... I realize it's just the orientation of the units (plus whatever that stuff is at the bottom-what are those buttons for? "If you reconstitute the aperature of the unilevualer quadrupulator, and punch in a hex key of the base root of 2..."), but it looks like something out of raymond scott's studio... pure old skool quirky synthesis.
The 4x4 keypads relate to the 4x4 matrix of pots next to them. They had a pulse, gate and Voltage output. If you pushed one of the buttons, you would get a pulse out of the pulse output, a gate voltage out of the gate output for as long as you held the button down and whatever voltage that was set for that button with the associated pot was available at the voltage output. The voltage latched.
I use them for transposing the sequences.