I bought this pedal for use both on stage and as a studio tool.
For this pedal to actually work it must, in my opinion, be used in a stereo setup. The product officially does support a mono signal path, but I don't think many will find that satisfying.
Initial impressions of the product was good. It does provide a significant fattening up of the ton. After a short while the problems started to appear though...
The main issue is that the product is plagued by some serious software bugs, and even though TC has been aware of the issue for about a year it does not appear like they will release a firmware update anytime soon. So be aware of this if you decide to buy!
The actual problems are these; First there a phasing issue.... which appear somewhat random in nature. Sometimes it sounds great, sometimes not. This is perhaps to be expected from an artificial doubler. The second problem is worse; At random one of the voices will move abruptly in the panned spectrum... jumping from one hard-panned side to the middle and back. This made the product unusable for me in a studio environment.
If you're only planning to use this on stage, probably no-one will notice and it WILL fatten up your sound. Useless for studio work, in my opinion.