Need a controller with 3 channels

I want to buy a AX2500 speed control. I find it in your web page that it may be 1 or dual channel but my robot has 3 axis and I need 3 channel. I want to ask you: Is there any 3 channel speed controller like AX2500? or if I buy 2 AX2500 (1 and 2 channel) how can I connect them to each other to have more synchronization?

You will need 2 controllers for 3 motors.
If you connect both controllers to the same microcomputer or RC radio, the motors will be quite synchronized.