Chaz MacCarron and Ryan Donaher in the US have always been very responsive and helpful with questions and issues I have had with my Ultra DAC. Just a week ago Chaz shared screens and helped me with a configuration problem I was having. I find the customer support service excellent. I do not like that M is not focusing on their Ultra and 818 DAC models to at least maintain some level of competitiveness.

Ultra DAC, Antipodes K50, Spiral Groove SG 1.2, Lamm LP2, T+A T1210R, VTL TL 7.5iii, Lamm M1.2, Wilson Alexia 1