A powerful receiver in such a small package! It has an oversized power supply and is heavy for its small size. It has functions that you find only on larger more expensive receivers such as a tape monitor, and phono input. The tape monitor loop can be used for adding a signal processor such as a graphic equalizer. The phono input is handy if you enjoy vinyl records. It is a great heart of a sound system with enough power to run 4 speakers! Happy listening!