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Fusion LBB Breakout Box


The ultimate “Breakout Box” for vintage Leslie® speakers.

The LBB Breakout Box is a versatile interface tool for the control and/or connection of multiple Leslie® speakers.

SKU: LBB Categories: , ,


The Fusion LBB Breakout Box is a robust, flexible interface designed for safely connecting and controlling Leslie® speaker cabinets.

Standard models include both 122 and 147 6-pin Leslie outputs and either a 6-pin organ input, 5-pin organ input, or a ¼” jack input for audio.

For speed control, the LBB is compatible with any CU-1 half-moon style switch or dual footswitch.

Some Leslie amplifiers have been modified with an EIS Trek II or other solid-state relay to add a Stop mode. The LBB is compatible with both 3-speed and 2-speed Leslie amps. Two Y/N (Yes/No) switches select either Fast/Stop/Slow mode (Y position) or Fast/Slow mode (N position) for the 122 and 147 outputs individually.


  • Provides Fast/Slow/Stop and simultaneous Leslie® 122/147 usage.
  • Safe, low-voltage DC speed switching for 122 and 147 Leslie® operation.
  • Capability to mount inside or outside of Leslie® cabinet or organ enclosure.


  • 122 and 147 Outputs: Standard on all models, can be used simultaneously.
  • Audio Input: Three options for audio input – ¼” jack, 6-pin, or 5-pin.
  • Speed Control: 1/4″ TRS input – compatible with any CU-1 half-moon style switch or dual footswitch.
  • Y/N Switches: Allows for 3-speed (Slow/Stop/Fast) and 2-speed (Slow/Fast) operation, for 122 and 147 individually.
  • COT Terminal: Allows hardwiring of CU-1 hand switch or dual footswitch to unit for speed control.
  • Mounting Kit: Comes with a mounting kit for mounting onto Leslie cabinet or organ enclosure.

Standard Models Include:

  • LBB-A: 6-pin Input, 122/147 6-pin Output
  • LBB-B: 3’ 5-pin Cable Input, 122/147 6-pin Output
  • LBB-C: 1/4” Jack Input, 122/147 6-pin Output



Leslie® is a registered trademark of Hammond Suzuki Corporation.

Additional information

Weight 50 oz
Dimensions 8.75 × 5.5 × 3.0 in


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