- "Monitor" or "main L/R" output buss of your mixing desk
- Outputs of a surround sound decoder pre-amplifier
- Pre-amplifier outputs of a surround sound amplifier
- Outputs of a stereo pre-amplifier
- Pre-amplifier (or tape) outputs of a stereo amplifier
- Speaker outputs of any power amplifier WITH one attenuator per channel
Note: if you have multiple 8030A's daisy-chained, use the first 'master' unit to control the level of the entire group of monitors.
Volume control was also available on 1029A, 2029A and 2029B. The 2029A and 2029B pairs were controlled by the right hand side master unit.