A few weeks ago or so there was a thread on 'Markbass warranty repair mess'....can't seem to find it now,but the OP was having a difficult time getting his amp repaired. A little over a week ago my Little Mark III started blowing fuses when ever I turned it on. I believe it was caused by my tuner,( it happened when I was clicking tuner off and on while setting intonation, there was a loud pop every time I would engage-disengage tuner). Anyways I clicked the link on the Markbass website that listed their warranty repair centers. I contacted the repair center in my state,(VST in so-cal). I e-mailed the company on a Friday with all the appropriate paper work and got a reply the following Monday with my RA #. I sent my amp out that following Friday and just got it back today! It seems they just replaced one of the boards in it. Works fantastic so far! Fortunately the whole process was very fast and painless for me. I can only hope Markbass warranty repairs for others go as smooth as mine. Thought I would share! Thanks!