With exceptional surround sound reproduction from this 7.1 CH Pioneer tuner amplifier, Sound Retriever Technology, and component video inputs, the Pioneer 7.1-Channel Digital tuner Receiver will take your home theater experience to new heights. In the convenience of your own home, you can finally watch your favorite movies come alive with the FSX-817-K. It offers you the great surround sound and a very heavy bass.It uses an advanced DSP digital technology to create independent sound fields that envelop you in an unmatched surround sound experience. In addition, it features Basic Phase Control, which is a bass management system that ensures a precise low frequency output, preventing unwanted distortion or coloring of the sound.