The dd1 works up to 125v so you should be alright.
16 ohm load requires 56.6v to get 200w
8 ohm load requires 40v to get 200w
4 ohm load requires 28.3v to get 200w
2 ohm load requires 20v to get 200w
Going to guess that the woofer in there has either a 4 or 8 ohm coil which puts you well in the usable range of the dd1.
As for the test tone I don't know, so hopefully someone chimes in on that.