This unit was purchased from and shipped (March, 2004) directly from Harman and the box has never been opened. Refurbished, but carries the full manufacturer's warranty as if brand new. Four-channels, bridgable. See the specs here: http://www.harmankardon.com/product_...202000&sType=C Asking $175 plus $30 for insured shipping anywhere in the Continental US. Reply in the thread or by PM if interested.