@flip49er I too have a Pass 30.8. I use the Isotek EVO3 Syncro Uni Sine Wave Rebalancing Unit in front of my AQ Niagara 1200 and really like the results through the high current plugs. I have only compared this to going straight into the wall receptacle and it makes a huge difference. From my limited experience I am fan of Isotek products. I'd be curious of your results depending on the product you choose.
