I own the 864, 324, 890 and Acute for six years. I had a problem with the 324 with one channel going in and out until the one channel failed. It turned out that Dan Meinwald's service tech Mitch Singerman lived nearby. I had a difficult to find short on the board which was just a bad trace which got worse over time (flexing?). It was fixed under warranty and returned within a week. I highly recommend Mitch Singerman for all types of audio equipment repair and Dan Meinwald as EAR's local rep. I bought most of the equipment through Tom Port of Better Records.
