Bryston 4B power amplifier from pro touring audio rig late 1980's early 90's. Recently serviced locally in Nashville. Tested and in good working order... Cosmetically it's got dings, scratches etc, venture to say it needs a good cleaning inside.The item "Bryston 4B Pro Stereo Power Amplifier" is in sale since Monday, June 21, 2021. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "merek1" and is located in Nashville, Tennessee. This item can be shipped to United States.