Question - Is a subwoofer output necessary? | AVForums
Add sub to Marantz PM6006 Amp | HiFiVision.com
Marantz PM6006 Integrated Amplifier and CD6006 CD Player - ecoustics.com
Marantz PM6006 Integrated Amplifier | Pre-Amp or Power Amp Integration | Superior Sound from Hi-Res Audio Files | Gold-Plated Inputs/Outputs | Complete the Series with the NA6006 and CD6006 : Electronics - Amazon.com