Awhile back I was having problems with my XREF-12 and they replaced the plate amplifier, but that did not help. Finally, Emotiva kindly just replaced the whole unit, but they did not want the enclosure or speaker back. So, for you DIY'ers out there, I have an enclosure with speaker (and defective rotary encoder electronics) to give away. Free pick-up in Denver area. Sorry, found a home for it.