No hum. However I have no volume control.
I connected the Dyn's to the Dacs outputs and there was no hum but I cannot control volume. I also connected an optical from the DAC to the 990.
No volume control. The speakers sound great but really loud.
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Outlaw 990/7700
Conrad Johnson Premier140 Tube Amplifier
Conrad Johnson 17LS MKll Pre Amp
B&W 803D2’s HTM3S DS7's
HSU Subwoofer
Mitsubishi 6800 Projector
Da-Lite Screen,
Oppo BDP93
Comcast
PS Audio DSD
Stack Variac
Kill-O-Watt
Nakamichi cables Audio 8 cables
Air-Server
Mac-Mini
ROON