Unique 34++ Peavey Acoustic Guitar Amp. A guitar amp by peavey can come in many different forms, and this can include solid state tube amps, tube amps, modelling amps and hybrid amps. .guitars shop by category guitars electric guitars acoustic guitars bass guitars ukuleles guitar amps guitar pedals & effects guitar wireless systems guitar accessories guitar strings guitar deals news & research new. Peavey guitar amps are known for having a range of amplifier technology.