its a sony sau-300mn

this is a muse to ntsc downconverter

some scratches to sides and top

as from japan runs on 100v so need a down converter

 may work with us110 as difference is only 10v

since i have no way to get a muse signal i cant test the unit

it will turn on with the first and second buttons cause the LEDs to change or blink depending on which you press

i am not getting video output- i think it needs amuse input signal to output something

hence im selling it as spare and repair as its untested