The BTC-1A provides precise control over the organ's bass, treble, percussion and overall level. The active tone controls provide true boost and cut of both the treble and bass. Since the unit is mounted on the SSP-3A chassis, the controls are located inside the console. This allows the owner to adjust the sound to their exact preference and not have to worry about others tampering with the settings.
NOTE: The BTC-1A functions ONLY with the SSP-3A PRE-AMP.