Still a tiny bit of hum with the MicroZOTL, not enough to be disturbingdiv>
Hi David,
I hope I can be of some possible help here.... I have had a look at the MicroZOTL (it looks great by the way). I can see it's quite powerful, and I can also see it's mains driven through DC. I'm thinking that the Encore's being so sensitive is what's causing the humming you're hearing. The same thing happems through my HPA 200 SE Head Amp.
I can do nothing re the hum on my head amp as it's AC mains only.
However because you have 12V DC you can try a power pack which should reduce the hum which I reckon is almost certainly coming from your mains adapter.
I have a power pack running my Cambridge Audio DacMagic Plus and it is super silent through the Encores.