My experience with the TM-1 interface and Turbo mode is that you have to connect the TM-1 out to the device in AND the device out back into the TM-1, completing a circuit if you will.

There is a “Turbo” LED and button on the TM-1 interface that will only light up if you have this complete circuit.

I used the TM-1 in conjunction with a Machinedrum UW+ MK2.