Source Audio Soundblox 2 Stingray Multi-Filter, Multi Filter effects pedal with onboard overdrive/fuzz, 12 different Low Pass/High Pass/Band Pass/Single Peak/Multi Peak & Notch filters, Control filter modulation with envelope follower, Tap Tempo LFO (Sine, Square, Random Sample & Hold, Saw Tooth), Source Audio Hot Hand 3 or Dual Expression Pedal, 2 user savable presets with dedicated footswitches, MIDI capable with optional Soundblox HUB v1 to control parameters and save up to 128 user presets, In-depth-controls for Modulation depth, filter frequency, Resonance, Wet/Dry mix, etc., Multi-function I/O for Source Audio Hot Hand or Dual Expression pedal, Universal Bypass: select either analog buffered or relay-based True Bypass, incl. 9V DC power supply, Dimensions (L x W x H): 114 x 114 x 57 mm (incl. knobs)