I purchased my Yamaha CR1020 receiver back in the 70’s. The sound has always been amazing, but the years have taken their toll. Intermittent issues are often the hardest to deal with, but Dennis seemed to know exactly what needed to be done. The receiver sounds brand new again. Not only does he perform quality work, but the receiver was ready much earlier than anticipated. Dennis has a strong knowledge of electronics and I would trust him with any of my equipment. I highly recommend Audio 3000 for equipment repair.