[squarefoot]

PP probably refers to those very cheap USB soundcards, usually shaped like a dongle, with two mini jacks, sold pretty much everywhere. I tried a couple in the past (can't confirm if the chipset is the same) and they definitely sound better than expected from a device that cheap, however be aware that manufacturers often save on parts number or quality to reduce costs therefore it can be a hit and miss, with some of them making noises or offering inferior quality.