Feature:1. In addition to the four Vol, Tone, Drive and Boost knobs, two switches are also available. The first has Comp Cut, FM and Vintage modes. They provide a range of useful tones, adding pure reinforcement, tightening or neutrality, respectively. Mosfet and Standard two-way switch for smoother overload 2. Comp Cut eliminates boundaries from the feedback loop. When you turn on the “Boost” knob, it will produce Monster Clean Boost sounds and slightly sharper OD sounds 3. FM stands for “medium range”, which provides a more natural sound, and tone improves clarity. Sounds great on Strat's Neck Pickup 4. Vintage (old style) represents the deep tone of the old Fd2, throughout the mix 5. Mini-Toggle 2, only using the old-fashioned knob, mosfet and standard Toggle will work. MOSFET for volume control 6. If you use the Standard function, the tone will be more asymmetrical, sweeter and more open, and the sound will not be overwritten . Pedal Overdrive Electric Guitar Classical . Pedal Overdrive Electric Guitar Classical Specifications: Item Type: Overdrive Pedal Material: Aluminum alloy shell Power Requirements: 9V DC in the Negative Center Current Consumption: 30mA Size: approx. 11.9 x 9.4 x 3.8 cm / 4.7 x 3.7 x 1.5 inches . Pedal Overdrive Electric Guitar Classical . Pedal Overdrive Electric Guitar Classical Package List: 1 x Overdrive Pedal 1 x Battery Cable 1 x Overdrive Pedal Footrest . Pedal Overdrive Electric Guitar Classical . Pedal Overdrive Electric Guitar Classical