Purchased this amp from a dear friend who took immaculate care of this amp. Before he sold it to me he sent it back to Audio Research and they found nothing wrong. I was going to use this amp for a second system but thats not going to happen. I have not put 8 hours on the amp since I purchased the amp. The D115 has the best mid range of any tube amp I have ever heard.For more information on the D115 MKII go to www.arcdb.ws.
Additional photos upon request.