This is the Formula 5F6 from Catalinbread, a beautiful drive pedal designed to become the foundation of your entire rig with beautiful 50's tweed tones. This pedal has been set up to respond just like a real valve amplifier so you can chuck whatever you want into the front of this pedal to completely transform your tone.
Tweed In A Box
50's tweed tones will always be popular with pop, rock, country and blues guitarists all utilizing these vintage amps to get some beautiful clean and mildly overdriven sounds. There is a second mode built in to this amp however that turns this light gain pedal into a snarling beast with much more gain and a modified tone stack to suit.
You can switch between these 'Stock Bass' and 'Secret Lead' modes using the internal dip switch. While inside the pedal if you are switching modes it is a good idea to modify the presence control to match your amplifier so you don't suddenly start getting harsh high end.
Externally you have access to the normal selection of amp like controls with Volume, Gain, Treble, Middle and Bass providing you a lot of control over your new sound. The controls are set to respond quite closely to the original settings you would use on the amps this is based on so you can quite easily take your settings to the real deal.
Here's what Catalinbread say about the Formula 5F6
What we did with the Formula 5F6 was reproduce the key circuit elements of the Bassman ""5F6"" preamp circuit's bright channel using JFETs instead of tubes and then ne-tuned and rened it for ultimate low to medium gain response in front of any good amp set clean. You get the same preamp structure (gain stage -> volume control -> gain stage -> tone stack) as the Bassman, key to getting not just the tone, but the feel and