Newbie member here! I just purchased a new in the box Markbass SD800 and two new in the box Markbass 410 cabs. Was playing the rig for the first time at the opening day ceremonies of the new Columbus Clippers Huntington Ballpark, which is the AAA farm club of the Cleveland Indians here in Columbus Ohio. Very nice corporate gig!! Big stage and huge sound right on the parade route a block from the new stadium, lots of people!! Here is where the fun ended for me yesterday. Hooked up the new rig and did a sound check and everything was cool. Started the first set and during the third song the amp died. No power! Sound engineer came up and we hooked my guitar straight into a DB so I could finish the show. Took the amp to Guitar Center immediately after the show and upon inspection the fuse was found to be blown. Put in a new fuse and amp still would not power up. Several more attempts to get it fired up failed and then the manager asked me if I would like to exchange it for another Markbass SD800 and said I don't know right now! I left the toasted amp there and told them I would be back tomorrow to decide what to do! Don't know if I even want a Markbass rig anymore. Just paid almost $3,000.00 for the whole rig. Your thoughts and opinions please!!