The Catalinbread Formula 5F6 funnels all the sound of the iconic vintage tweed Bassman amp into one small enclosure. Keep the gain low for sparkly harmonics in your drive, or crank it all the way to 12 for a fat, intense crunch. Use it with a Fender and it's a perfect match; play a Gibson through the Formula 5F6 to overdrive your amp sooner and harder. Don't shell out for a vintage amp; thanks to Catalinbread and the Formula 5F6, you won't have to.