Behringer vintager ac108 guitar amplifier behringer ac108 p the behringer ac108 guitar amp puts real tube tone and vintage character into a light portable package p p it s a beautiful sounding sidekick for beginners in their bedrooms as well as seasoned guitarists in need of practice amps p p the ac108 features one hand selected 12ax7 tube in the preamp giving it the rich beautiful tone guitarists have cherished for decades p p when you crank the ac108 s gain and st