Original version of the TL Audio C1 dual mic preamplifier and stereo compressor. Based on TL classic valve design so exudes a nice warnth and crunchiness when driven. Apparently this unit has some interesting provenance. I've owned it for a long time and it has remained racked in the studio and used only occasionally (I don't really record any more). 

Good set of controls including 2x mic inputs with 48V option / line inputs (hard wired at rear) and front panel mono/stereo Aux input, switchable between guitar (hi-Z) or keyboard (line level). At the back it has sets of inputs and outputs both for balanced (xlr) and unbalanced (1/4" jack) connections and selectable +4/-10dBu levels. There are also a set of Send and Return insertion points (1/4" TRS).
Both channels have a useful 90Hz low cut filter to stop boom, rumble and over triggering the compressor section and a stereo link switch can combine some of the controls to keep in phase.
Overall a very useful and well featured preamplifier.