The Peavey Classic 30's 30-watt power amp, when combined with the specially-voiced 12" speaker, creates a very powerful amplifier that's portable enough for backstage or practice, yet loud enough to jam with a rhythm section. The dual channel preamp allows quick variation of tone - from vintage blues, to modern hard-rock and grunge tones. The boost switch is particularly useful in obtaining the more traditional "cranked-amp" tones without the harshness, which is generated by sending too much low end to the power amp.