Being a bedroom rockstar who occasionally plays gigs in a cover band, I sometimes need to tune to something other than standard.  Usually, it's just Eb for things like GnR or a full step for Motley Crue.

The good : Enter this bad boy.  Stomp on the pedal and drop to Eb. Turn the knob, D.

It works and it works well.

The bad: it's $175 bucks give or take.

Tone suck.  You can tell the difference even when it's not engaged....true bybass lol. But in a jam session or gig?  Well, it's kinda like arguing about the tenon on a Les Paul.  No one gives a shit when the drums kick in. Attached File

I have one and think it does a pretty good job all around. Some of the heavy songs I like to play are down two full steps. Turning down all the strings on a Floyd Rose guitar -2 steps? F that noise.