I bought an Acoustic Image amp in 2007. It served me very well for about 10 years as my main amp for local small rooms. About a year ago it started losing the input signal intermittently and acting weird in other ways. The folks at AI suggested I spray Deoxit in the input jacks and the pots and switches. This seemed to help for awhile, but the issues resurfaced several times. Finally I sent the electronics back. AI completely overhauled them at no charge as part of their warranty. They had it back to me in less that a week from the day I shipped it. Noticed when I took the parts out of the wrapper how shiny and new everything looked. Had to double check to make sure they were the same parts and they hadn’t just replaced the whole thing. It is working fine and sounding great. (took it to a gig last night; it sounded better than ever. I feel like I got a new amp, one I really like!) I then happened to look at the invoice and saw just how much work they did and how many parts were replaced. I’m really amazed that they did all of this as warranty work. I can’t thank them enough. I also have a focus head that I bought used which they repaired at no charge. I just want to tell everybody how great the company is. They make the best amps for Upright Bass, in my opinion, and stand behind them with excellent service.