The title says it the Lepay LP-2020A for eBay has died. Going great then suddenly silence. Replaced it with the Parts Express LP-2020TI and I am off and running again, I tracked down the Parts Express amp's RF problem and it was cable issue that is fixed. I had read about the quality issues the Lepai knock offs have and I have learned about it first hand. Had I purchased the defective Amp from Amazon I would have called for a replacement. But since I purchased it from eBay and considering what I paid for it, it isn't worth the hassle. The Parts Express YouTube was correct about the knock off's. Parts Express has Texas Instruments making a modern version of the Tripath chip so they are the go to place for these Class "D" amps. In My other posting on the Parts Express Lepai Amp there is the info on this amp's chip set.