This BBE Sound 482i is a 2 channel Sonic Maximizer that will enhance the sound of your audio system. It is a great addition for those who are into pro audio equipment and musical instruments. This model is specifically designed for rack effects, and is compatible with various audio systems. With its brand reputation and advanced technology, this Sonic Maximizer will bring your sound quality to the next level.I am not an expert in any particular item that I have listed. I purchase items through local estate sales, auctions, ETC. and re-sell them. Because this item is used it is sold " AS IS " with no warranty.