This unit had a digital lock problem in 2010 and was sent to the authorized Musical Fidelity service rep Rick Walker for repair. I had Rick also perform the MF "fine tuning mod" 4/ 2010 (see MF web site and attached invoice picture for description) The mod greatly increased the sonic performance beyond my expections. Rick also installed Kimbers best digital rhodium connector. The cost of repair and upgrde was $950.00. I have yet heard any unit come close to this unit for under 5K. The unit is in perfect cosmetic and operating condition. The lock problem was resolved by replacing a defective digital IC input and NO problem has been encountered since factory approved upgrade. With the replaced tubes, (good for 100,000 hours) and mod, this unit is a real bargin for a total of $1,150.00. Will split shipping and paypal.