This is a Sansui CA-F1 preamplifier. It has been professionally maintained, sounds great, and is the perfect match for Sansui power amps from the 1970s and '80s like the BA-F1, BA-2000, BA-3000, etc. The green power light works when the amp powers up, all switches and controls work as they should with no extraneous noise. This unit includes the case as well as the rack adapters that you can see in the pictures (they’re securing the CA-F1 to the case). When I come across these, they usually have scratches on their tops from previous owners placing equipment on top of them. However, this one lived in its original case, and so is really clean! I will package it extremely protected (see my feedback as a seller) so it arrives to you safely.