I have a nearly mint Soundstream MC amplifier which I bought from New York way back in 1992 brand new & only used it for a short period of time. It hasn't had any caps or parts replaced & has been sitting in my bedroom closet for many years. Beautiful sound quality power amplifier. Also have a near mint Soundstream D200 II stored in my closet. I have the original user manual for the MC500. Bottom plastic covers are both in place & amp has never been opened. I live in London, UK.