1) Instrument amplifier 
Pignose-Gorilla, commonly known as Pignose, is a manufacturer of portable, battery-powered guitar amplifiers, as well as other musical-gear such as A.C.-powered practice amps and guitars. ==Legendary 7-100== The Pignose amp, now known as the `Legendary 7-100`, is a battery-powered, 5-watt portable guitar amplifier with one 5` speaker. It was in......