Millenium NonaPad

I returned the first unit I got because theres was significant electronic interference in the output audio. The second unit seemed better at first, but when I began to compress the signal and mix, I could again hear a crazy amount of electronic interference. I also purchased a yamaha kick pedal trigger and when using it with the NonaPad there is a lag between the midi that comes out of the Nona when compared to the audio. I have done testing with the audio cables/power supplies/and other midi devices and all tests point to the Millenium NonaPad as the cause of the issues. I still use it occasionally because I dont currently have the money to upgrade, but I wish I would have returned the second unit in time. Super disappointed that Thomann still sells this unit.