I bought a Positive Grid Spark amp a while ago that came with a 2 prong power supply. I heard reports of problems with the floor so when I saw other people buying this item I decided to buy it. I've had the power supply for 3 weeks and everything is working great with my Spark amp so far. I had no problems with the amp at all. I can only say that I wished for an alternative power supply for the amplifier. I could maybe get it from Positive Grid but I figured since I've had the amp for 4 months Positive Grid might be tricky since I've had the amp for some time. Maybe if something goes wrong with the power supply. As for the amp, I will update this review but for now all I can say is that it works well.
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