This is an Acoustic Solutions DS533 home surroundsound system. It comprises an amplifier with internal sub-woofer, 3 rear satellite speakers and 2 front satellite speakers. It comes with a credit card size remote control. You will need to supply some of your own speaker cable.
It accepts optical audio, co-ax audio and analogue phono input.
It has 3 output modes: Prologic, Dolby Digital and Stereo. It has 6 output 'effects' (hall, church, etc).
Full working order. Sensibly priced!