Electronic Audio Experiments / Prismatic Wall Hardly used since purchase. I am selling it because it didn't suit me. There are some scratches on the knobs, but it is generally in good condition. The following is a quote from the distributor. The Prismatic Wall is a very unique resonant resonator, unlike anything seen before in the world of guitar pedals. It digitally recreates a virtual collection of "strings" using physical modeling, and creates and outputs a sound in which the strings resonate in response to the input. The strings can be tuned to a specific pitch, and can produce everything from delicate harmonies that resonate in thirds and fifths to the rich chromatic sounds of a grand piano, creating a metallic yet warm and ethereal orchestration. The sound produced from the simulated string vibrations maintains a concrete physicality while adding a sustained spectrum to the instrument. It is highly responsive, delicately stimulating only specific pitches, or creating complex resonance by linking all the strings with percussive attacks. Damping and Decay change the brightness and sustain of the strings, allowing for a wide variety of sounds, from momentary bursts to infinite drones. It's like reverb, like a synthesizer, like a pad, but somehow different. A mysterious sound that has never existed before. It works with not only guitars, but also basses, synthesizers, drum machines, vocals, and all kinds of sound sources.