Hi Scott
The Torque system consist of a 150 watt stereo amp with two speaker cabinets. Probably only available in the U.K. I run from the Tyros outputs into a Carlsboro mixer.Then from the mixer to the Torque amp. This has auxilliary outputs from which I feed into the Logitech controller.

I am thus able to reduce bass if I feel it to be too heavy but I do not do this often unless I am playing on a resonant floor.
I have never had anything but compliments on the sound quality since I have been using this set-up..Perhaps my clients are easily pleased!!!!!!!!!!!

All the best ..Trevor