Based on the magnificent work of RunOffGroove, the Ruby circuit can kick out some serious oomph depending on your choice of speaker. All from a little 9V battery or DC supply (can be supplied with 12V if you really want to push it).
Some clever jiggery-pokery over at Beavis Audio gave birth to a highly modded Ruby, dubbed the Noisy Cricket. This adds a tone control and a 'grit' switch to give it a little more break-up.
Will drive pretty much any speaker with different dynamics depending on size/impedence. A Marshall 4x12" goes from fairly loud clean to louder with decent break-up. A little 4" speaker went from crunchy to full-on screaming.
No enclosure option for this - half the fun is housing it. We've seen some crazy versions!
Kit includes: PCB, all components, hook-up wire, stereo jack socket, DC socket, battery snap. Output jack is optional. Noisy Cricket includes toggle switch. Does not include knobs.
PCB size: 40 x 22mm
Knobs required: 2 / 3
Download INSTRUCTION PDF