An extra preamp tube makes it a 'plus.'
The Peavey 6505+ 120W Guitar Amp Head is great for hardcore or metal players. 6 - 12AX7s in the preamp add up to even more terrifying punch and mind-rattling gain. Includes footswitchable lead/rhythm channel select, effects loop, 3-band EQ, plus resonance and presence controls on each channel. Rhythm channel includes pre/post gain and bright/crunch switches. Lead channel includes pre/post gain controls only. Preamp output. Footswitch included. 4, 8, or 16 ohms.
The 6505 Series guitar amplifiers are named in celebration of Peavey's first 40 years, (1965-2005.) While known as the 5150 Series, these amps became the undisputed go-to guitar amps for scores of rock, hardcore, and metal bands because of their raw tone, relentless power, and roadproven reliability.