The Missing Link
Unbelievable pedal. As others have noted this is one those pedals that stays on permanently. For best results use in your amp's FX loop. I'm using it in my Trem-o-verb and it has solved nearly all of my tone problems. The classic boogie mid-scoop is exactly what the dual rectifier needs but doesn't have. It makes my Cornford Hellcat start to approach the Mark series tone range (think IIc+ or IV). It has the quality construction you expect from Mesa. It also comes with a battery but I had to replace it immediately because it was nearly dead.