Electro-Harmonix 8 Step Program Sequence Foot Controller Drum Heads The TONE knob is a

The TONE knob is a low pass filter that rolls off the highs

Colorful and seductive in stereo

Power Adapter: 9 VDC External Adapter

CD/MP3 Input: Yes

while a large library of tones and rhythms makes it perfect for learning

Electro-Harmonix 8 Step Program Sequence Foot Controller Drum Heads The TONE knob is aElectro Harmonix 8 Step Foot Controller The optional foot controller lets you save and recall up too 100 presets with the 8 Step Program main unit. Quick Specs Save and recall up to 100 presets Two footswitches let you page up and down through your presets Receives its power directly from the 8 Step Program via a standard guitar cable