This Pyle PCAU46A Stereo Amplifier is a compact choice for those looking to give their stereo system a real boost. This unit features both SD and USB memory card readers, along with additional AUX and CD inputs, while the amp itself has a user-friendly LED display and simple controls for straightforward adjustments. You can also connect additional devices via the 3.5mm AUX input, including your favourite MP3 players.