BTC-1A BASS TREBLE PERCUSSION LEVEL CONTROL by Trek II
Trek II BTC-1A BASS TREBLE PERCUSSION AND OVERALL LEVEL CONTROLS This option provides precise control over the organ's bass, treble, percussion and overall level. Since the BTC-1A 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.