Okay, since no one else has answered yet, I'll give it a try and someone can correct me if I'm wrong:
1. From the website:
Q: Do the units have a bridged mode?
A: The units are already bridged. Each channel on our ONE/ONE.2/TWO/Sensation amps supports 87 watts. Choose L or R and you'll get a bridged "mono" unit that uses all the power you can throw at it. Warning: outputs are not ground and the units outputs cannot be connected together in any way.
2. From the Virtue One/Two Manual:
You may connect speakers with an impedance of anywhere from 2 ohms to 16 ohms, without problem. Lower impedances may cause the amp to shut down; higher impedances may not have optimum frequency response. But you'll be fine with the vast majority of speakers on the market. Running the amp without speakers will not harm it.
I think the same applies to the Sensation, but I'm not 100% on this. I agree that the website could use more detailed pictures
3. One of the linear supplies (JT Dynamic/Antek/Astron) or batteries.
Again, anyone feel free to add, correct, dispute or otherwise change anything.