Source Audio SA225 Soundblox 2 Dimension Reverb Diverse Sound Palette - Featuring 6 different room sounds, 2 plate reverbs, 2 spring reverbs, modulation reverb, and echo. 9 Adjustable Parameters - adjust the wet/dry mix, time (i.e. resonance), treble, bass, pre-delay, diffusion, output level, modulation rate, and modulation depth. Multi-function In - use the Source Audio Dual Expression Pedal or the Hot Hand Motion Sensor for on-the-fly control over any of the 9 adjustable parameters.