Anonymous9 years ago022Do I need to buy the power adapter separately?Former user9 years ago000No, it's included but there is no off switch to the item; that said it's a big jump in sound quality and worth the investment.Commentwanderleyv9 years ago000You do not need to buy a power adapter separately, as it is included in the package.Commentdurilka9 years ago000No. It's all in the box. In retrospect I would have bought the next model with adjustable in/out impedance. Combining stuff might get tricky.Comment