Robert, I had to buy it because I plugged it in to a Vox AC15 CC which sounded "ok" by itself.. but when I kicked in the drive pedal it all happened.. It sounds nothing like a tube screamer, it starts with a little tube amp growl and ends up in a full "my head´s in mississippi" drive.
I swear that I could feel that Mr Gibbons and Mr Perry was peeking over my shoulder to investigate where all that righteous drive came from!
And it does AC/DC style riffs very well too
Even though it got plenty of drive on tap it still retains the original character of my guitar.
Basically this is a tube driven pedal (operates at 300 volt HT) that are built into a sturdy and heavy (1.5 kg!) case, it has what Blackstar call a "class A tone control" which is VERY effective.
It plays along just fine with both clean and slight overdrive sounds on my Vox amph.
Only downside that I´ve noticed so far is that it needs a 16v adapter (included), its probably not easy to find another one if it breaks down.
Tot, I didnt try the other pedals (they hade the dual and that metal dist) cause I was looking for a overdrive pedal, I did try out the Digitech Hardwire pedal but that was not a great sounding pedal imo.
Here is a link to some reviews:
http://www.blackstaramps.co.uk/products/ht/htdrivereviews.html
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