Dropped tuning

I would activate STOMP A then scroll using the TYPE knob and select TRANSPOSE. Then you can select via the number of semitones the pitch will transpose up or down.

So if you are tuned to E standard tuning, if you wanted to play in D standard you would adjust to -2.

Exactly this ^^^^

...unless you're talking about something like Drop D tuning - which can only be achieved on the guitar, not downstream

I need to play around with this!

It's very simple. But don't listen to your guitar because you'll hear standard tuning and from you cabinet you'll hear the detuned sound. Can be confusing.But it's great for transposing in the wink of an eye...! And every tone in playing chords stays in tune!

Just remember to deselect it for the next tune where you don't need it.

I saw a bass player frantically retune his whole bass during a song because the guitarist forgot to deselect the transpose function and put the guitar from F back to E,

Please don't ask me how I know that duh!

Quote from Gizmo

Please don't ask me how I know that duh!

If you were this guitarist, then you're not alone
I play some tunes in droped D. It happened more than once that I forgot to retune.