Selling my Marantz HD-DAC1: Bought roughly three months ago, in excellent condition - used about 150 hours total. This particular unit has a slight hum when using really sensitive cans like the ATH-W1000x. I haven't noticed any with the MDR-Z7, LCD-2 and DT770 though.
PM if you're interested. I can ship this unit worldwide, but please be aware that due to the weight, it'll cost a bit.
Selling because I want to upgrade to the Questyle CMA600i.