Before I bought the HD300 I had some concerns about using it directly through a PA in a Live situation. I asked some newbie questions and read loads of discussions on this forum about various aspects of using the pedal and getting particular sounds. I went ahead and bought it.
I have to say I am really delighted with the pedal and think it sounds great live going straight to the PA. For anybody else who is having doubts, here is an example video of me using the pedal straight to PA with my band (I'm the guy on the right with the dark green LTD guitar!):
The video quality isn't great but to my ears I am really happy with the pedal.
Anyway, thanks for all the help and pointers I got on this forum and happy playing!