Can't help you open the case.
My purchase of the amp was necessitated when one of my monoblock amps blew out. I was looking for something that was relatively inexpensive that would hold me over until I could figure out whether I was going to purchase something in the price range of a Bryston 3BSST, Simaudio W3/W5, etc. To my surprise the damn thing sounds as good as others have commented and with my modest apartment it drives speakers as loud as my neighbors can stand.
My purchase of the amp was necessitated when one of my monoblock amps blew out. I was looking for something that was relatively inexpensive that would hold me over until I could figure out whether I was going to purchase something in the price range of a Bryston 3BSST, Simaudio W3/W5, etc. To my surprise the damn thing sounds as good as others have commented and with my modest apartment it drives speakers as loud as my neighbors can stand.