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Someone who uses the group of drugs known as Amphetamines. Particularly, Methamphetamine.
Person 1 - Hey, look! It's that new guy everyone's been talking about! I heard some people caught him smoking meth around the corner of the school.

Person 2 - What an Amp Head...
by Roxus June 25, 2012
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A Guitar Amp which only consists of the Preamplifier and Power Amplifier stages. Speakers are purchased in a separate unit called a Speaker Cabinet. Amp Heads, or "Heads" are usually less expensive than an equivalent Combo Amp, as they do not have speakers, but they are far more durable and flexible.
Check out this awesome Dual Rectifier Amp Head I got!
by Kurt_F July 16, 2008
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(Usually) a younger individual that will down excessive amounts of energy drinks while working. The unrealistic speed resulting from such an action is disruptive, skews time allotted values on a production line and makes hard working and productive people look bad to the boss.
Person 1: Man. that guy looks like he is flying!
Person 2: (annoyed expression) That's our resident Amphead. A gallon of Red Bull will sure give you wings...
by CryHavoc August 21, 2019
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