MOOF. man. i have a Year4545. it's so good. but the Year2525 takes all the stuff that i could (and sometimes shouldn't) use live and makes it a simpler interface where i feel safer getting back to a tone that i love. i think right now Mssr. Hamilton is revising the 4545 to sit somewhere between the 2525 and the 4545 in terms of controls/sound/functionality right now. can't wait to see what that sounds like. here's a youtube bloober........... SS/BS Year2525 on bass - YouTube LURV. THIS. PEDAL.