I'm actually thinking of selling my D70s. It's a great DAC performance-wise, but I don't think it makes much audible difference for me.
I have a 20-year old Bryston DAC and a 2 year old Schiit Modi 3 and I can't really tell the difference in blind listening. I mostly listen to 44.1K/16-bit files over Thiel CS6 speakers using RCA digital input. I have a BluDento that does equally well for Bluetooth. I can fool myself into thinking I hear a difference with sighted listening, mostly because I want to like the D70s more. It does look more interesting than the BluDento, though.