New Schiit Freya or used Conrad Johnson PV-10AL/BL, or?

If you use balanced and single ended for different sources , be careful . I bought the Freya , it produced a loud hum through my speakers . I couldn't have both single ended and balanced plugged in at the same time . had to return it . 

@skiroe  I ran the Freya this way : Sonyhaz1es - balanced into freya for music listening . Oppo 203 - rca input into Freya for tv/movies. There was a loud hum that stayed consistently loud when both inputs were connected , but only using one at a time . Once I took out either the balanced or RCA input connection the hum would be gone . I used a balanced out from the Freya to my amplifier .