The S1-412PRO guitar speaker cabinet delivers awesome tone and projection unlike anything in its class. These standard "1960"-size cabinets use heavy-gauge wiring and finger-jointed birch-ply construction. The internal baffle design delivers a balanced midrange response. Inside, four 12" Celestion Vintage 30 custom-voiced 8 ohm speakers give this cabinet its voice. The S1-412PRO can be used in mono (240W RMS; 8 ohms) or stereo (120W / Channel; 16 ohms per).