I purchased the Vana Light 2.1 and the Dual PSU and the Volt Amp Plus with Stepped Attenuator. It was quickly delivered on July 3.The PSU will power the Volt Amp but will not power the Kali, Sparky, Piano 2.1. I was excited to hear how good it sounds but my frustration is winning over. Has anyone else had this problem and how did they fix it?