Just buy it. Coolest sounding amp ever. You just have to jump it suitable to your guitar and then crank those loudness knobs. If you want clean just clean it up with the guitar volume.
I will say, the Toni Iommi signature pickup was made for this amp. you definitely need a treble booster if you have vintage output pickups unlike the iommis which are HOT
This amp nails the Plexi tone and feel at manageable volumes. If you play 70's rock in bar type venues where volume is an issue this is the amp for you!!