Name: microFidelity Mini Amplifier, Model 200 / Amphony 200
Channels: Stereo or bridged mono
Output: 2 channels at 40W, or bridged mono @ 80W (rms) or 150W (peak)
Power in: 24V
Input connections: RCA
Speaker connections: spring clips
Width: 3-9/16 "/ 91 mm
Height: 3/4 / 9 mm
Depth: 3-7/16 " / 86 mm
Weight: 12 Oz.
Extremely small and lightweight. Aluminum chassis. RCA inputs on front face. No on/off switch, volume wheel is unmarked. Sound was good. However, sound ended up muted/distorted after a couple weeks of use. Possible that it is fixable (hasn't been investigated yet). If it is fixable/hackable, this could be a very useful amplifier.
Used in bridged mono mode with the Clark Synthesis TST239.
Unable to remove all the screws to hack amplifier - two of them very firmly set in and began stripping when removal attempted.