The amplifier (AMP6) is the circuit board driving the motor in most TigerStop positioners. AMP6 is compatible with TigerStop, TigerFence (and TigerFence StraightLineRip), TigerCrossCut, TigerTurbo, TigerRack,and HeavyDuty2. The AMP6 price includes a $200.00 core charge, refunded if the previous amplifier is returned to TigerStop within 30 days of the new shipment. AMP6 requires a Controller (CON5) and is not compatible with older controllers. It's important to test the motor before ordering an AMP6, because a damaged motor can destroy a fresh amplifier. AMP6 orders require the serial number of the machine that will receive the electronics.