you are looking at a vintage early `70s ampeg v-4 all tube class "A" guitar amplifier. i owned it`s little brother the v-2 for many years and still have hearing loss because of it.
the v-2 was consevatively rated at 60 watts at 8 ohms. this guy is rated at 100 watts at 8 ohms. it`s loud enough to knock planes out of the sky and evaporate house pets.