Mattoverse Echo Amp warble swell echo mkii The Solar Sound is a

The Solar Sound is a beautiful and uniquely impractical solar powered effect pedal from Mattoverse Electronics

Foot-controllable swell feature with swell onset control

please be aware they often seem to have scrapes

The AirTrash uses soft-touch relay true bypass and the DroneTone MKIII uses hardwire true bypass

Mattoverse Echo Amp warble swell echo mkii The Solar Sound is aThis is from my personal collection, not sure on the # but less than 15 20 of these were made I believe. The Echo Amp is a small standalone audio amplifier with a built in speaker that consists of a preamp into a simple echo circuit into an op amp gain circuit with the output fed into a small Class D power amp. Overall it is a bit noisier than I was aiming for and the wood enclosure versions can vibrate too much at certain frequencies. Not a ton of