Yamaha R-S202 115W Stereo Receiver has a high sound quality design that minimizes the length of signal routes and optimizes the circuit layout. Positioning the power transformer near the power amp circuit reduces power loss while improving peak power supply capacity to enable high volume output. The signal ground and power supply ground are connected at one point, eliminating mutual interference to achieve a higher S/N ratio. It provides Bluetooth functionality to let you enjoy easy wireless music playback from smartphones and other devices.