Take off the back panel by unscrewing the 4 Phillips head screws on the back of the amplifier.

Remove the four Phillips head screws on the top of the amp. These screws are significantly longer than the back panel screws.

Remove the quarter inch speaker cable from the jack in the back of the amp.

Unscrew the three remaining screws on the back side of the amp head as indicated by the green circles. Be sure to keep the amp secure as you do this because it will no longer be supported by any screws