Many thanks on your very detailed opinion. I thought about upgrading the SMPS with Paul Hynes LPS too, but heard that the delivery takes a while. Mutec distributor here is a friend, so I had Ref10 at my place for nearly 3 weeks (I helped my friend burn in the unit lol). After may be 10 days, the...

Hi! I would like to know how the DI20HE compare to MC-3+ USB? I have a MC-3+ USB, and previously had tried 2 units in serial, as well as connected to Ref10. The 2 units in serial was better than just 1. Just wondering if I should buy the second MC-3+ USB, or try another DDC like the DI20HE.