You are bidding on a mystery amplifier. Bryston is a very good quality amp , built like a tank and designed to last a long time as this is a commercial model for venues and concerts. This amp was bought used from a friend but I never managed to use it myself as it was a center amp and I kept it as a spare in case needed. The only issue I saw was the power cord needed to be replaced as it shows a lot of wear and use. This is a 110 Volt 60 Hz amp for the North American market. Needless to say I have never tried it out myself. Have recently moved on to other projects. Item is sold as is and buyer pays shipping.  Note due to weight and size, shipping may be a bit expensive unless you have an account with Fed Ex or UPS etc.