6601 is a high performance audio distribution amplifier for the broadcast and recording industry. 6601R has all the capability of the 6601 plus selectable remote gain control. Both distribution amplifier can be configured as mono or stereo with 8 balanced outputs (mono) or 4 balanced outputs per channel (stereo). Mode selected with a jumper on the module. Up to 12 6601 or 6601R audio amplifiers can be mounted in the 2RU Avenue 6600 frame. The 6600 frame is dedicated to audio distribution and plugable terminal strips are standard on every frame. There is no need for rear modules or special adapters. Redundant power is an option. Power supplies are accessed from the front of the frame.