dimed

Etymology 1
Presumably from.

Adjective

 * 1)   At volume setting 10 (the loudest).
 * 2) * 1998 January 6, Rory McQuillan, "Gear: Does anyone use tone controls on their guitar?",, Usenet,
 * "I asked […] how they adjusted the tone controls on their guitars. They both told me the same thing, that they dimed 'em and adjusted their tone at the amp."
 * 1) * 1998 February 15, Milan Plechata, "Re: DIMED- N.J. Slang??",, Usenet,
 * "Using dimed to mean at ten or full volume is pretty common here in South Carolina, too. I've been hearing it for years, now."
 * 1) * 2002 January 17, ryanm, "Re: Most appropriate Marshall guitar amp for studio",, Usenet,
 * "The only way you're going to get the 'dimed marshal plexi' sound is with a dimed marshall plexi. It's gotta be non-master, though, and you have to put all the knobs on 10."
 * 1) * 2007 February 13, Jim, "Re: A question about amp volume.",, Usenet,
 * "Tell us why many amps will give a warmer, smoother tone with preamp volume dimed and guitar volume down (as compared to guitar on 10, then turning up the amp)."

Etymology 2
From the verb dime.

Etymology
From.

Adverb

 * 1) thus, therefore