I got an MP-2 on eBay last fall. The spring in the battery tube had broken loose so I sent it to the factory in Wisconsin. There was about a two week wait before they could even examine it, but they fixed the spring, replace several parts (such as the XLR inputs, return and limiter pots), and even found and repaired a short somewhere in its innards that I didn't even know about. Total bill was just under $100 (not counting shipping), communication was excellent, and my restored preamp runs like Jack the bear. I could not be happier, or more impressed by the way Sound Devices stands behind its products, even discontinued products from years ago.