Such an awesome amp, the Herbie. Got to air it out yesterday and some less than respectable levels . No effects, just channel 3 all out balls to the wall with drop B and drop A tunings. Damn, I love this amp. The jury is still out on 4 x 12 cabs, but between my FLV30's, a rear load V30, and my Bogner Uber cab, the Uber with the X pattern V30/75's brought out the best tone and depth I am after with the Herbie .