Hi All, a friend of mine is looking buy his first 'proper' bass amp - he's currently got an Ashdown after 8, but is now playing in a band with a proper drummer and everything, and needs something a whole lot louder. He's probably going to go for a 2nd hand HA3500 and is looking at a couple. One has 'Transient Attack' on the front plate, and the other doesn't. Anyone know the difference between these two? I'll try to post pics later on. Cheers guys 'n' gals.