Amplifies small signals from the turntable cartridge by absorbing them through the Moving Magnet input (or Moving Coil if that’s your fancy), applying some RIAA defined boost and flatness and outputting the goodness of the music at a similar “line level” volume to other HiFi components. Nicely presented in an extruded military style aluminium tubular case for protection presumably against bullets!!
You might think a box this large would include the power supply – but no, there’s a standard wall wart type for that!
Performance? Well, it does the job, faultlessly. I needed a vinyl preamp as my Cyrus Amp didn’t come with one fitted, a trend understandably common amongst similar component amplifiers nowadays.