This allows the Nano Q-Tron to create tone-altering effects ranging from subtle to dynamic, auto-wah to ultra-funky. QUICK SPECS: - Vol (Volume) knob which controls the pedal's output volume - Drive Control adjusts its filter sweep sensitivity and how the pedal responds to the user's playing dynamics - Q Control sets the peak bandwidth of the filter and determines how subtle or dramatic the effect will be - LP BP HP Mode Switch controls what frequency range the filter will pass. LP (low pass) emphasizes the lows, BP (band pass) the midrange and HP (high pass) the highs - Pedalboard friendly, compact, rugged enclosure - True Bypass - Comes equipped with a 9Volt battery and can also be powered by an optional 9Volt power supply. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Filter & Modulation".The seller is "specialty_traders" and is located in this country: US. This item can be shipped to United States.