They have the pedals at the kiosks where you can try the instruments out, they are pretty cool. Toe-up is the dry sound, toe-down is the effect blended in
The Ernie Ball Expression Overdrive delivers everything from a hint of natural tube-amp-like overdrive and rhythm crunch to searing lead tones. It features settings for the drive, boost, and tone, with a foot-sweepable overdrive control, making it effortless to go from clean to roaring all-out growl and everything in between. Starting at $179.99
The Expression Series Ambient Delay provides 50 to 750 miliseconds of delay time layered with reverb. For everything from slap-back to standard repeats, it features settings for delay time and feedback, as well as reverb size and level, with a foot-sweepable effect level control to integrate anything from subtle textures to ambient soundscapes. $Starting at 199.99