FiiO BTR3 Bluetooth receiver. I have a few wired headphones I absolutely love. Sennheiser HD650, Sennheiser HD58x, Oppo PM3, to name a few. I'd like to use the

FiiO BTR3 Bluetooth receiver. I have a few wired headphones I absolutely love. Sennheiser HD650, Sennheiser HD58x, Oppo PM3, to name a few. I'd like to use them wirelessly, because, hey, it's just super convenient... I clip this small receiver onto the headphone band (above the ear), and run a small cable up along the side of the headphones. Now my headphones have bluetooth! It powers up the Oppo PM3 and Sennheiser HD58x's more than enough, and it sounds great. It's comfortable and light - you wouldn't even notice honestly. I highly recommend.