Mattoverse Solar Sound solar sound see the demo videos below

see the demo videos below (the circuit is the same regardless of enclosure size except the CV Gate Rate Sync feature is not standard on the new smaller model):

Output is approximately 4-watts at 4-ohms

especially when using with an external speaker

or awfully amazing

tempo sync input (0-5V)

Mattoverse Solar Sound solar sound see the demo videos belowThe Solar Sound is a beautiful and uniquely impractical solar powered effect pedal from Mattoverse Electronics. Consisting of a simple transistor based gain circuit that has been finely tuned to take full advantage of the low current and voltage provided by the solar panel, it provides everything from starved and choked gain tones, to light overdrive, and smooth distortion. It was designed for and works best when powered from a natural light source,