Electro Harmonix Deluxe Bass Big Muff Pi Fuzz Pedal For Bass Hot One Piece Swimsuit. Thunderous bass fuzz with crossover control and expanded I or O in the most versatile Bass Big Muff ever. The Electro Harmonix Deluxe Bass Big Muff Pi Fuzz Pedal for Bass is the flagship of EHX bass fuzz and delivers enhancements to the classic Bass Big Muff Pi that are specifically tailored to the needs of the modern bass player. The sturdy foundation of the Deluxe Bass Big Muff is the thunderous tone inspired by the classic Black Russian Big Muff of the 90s. Added to that is a Blend knob to mix back in your original tone and add definition to your low end. A Gate quiets unwanted hiss for a smooth performance. The ultimate tone sculptor of the pedal is the Crossover section. Here the Fuzz and Dry signals are separated and run through a High Pass Filter and Low Pass Filter respectively. This creates a tone with fiery top and a huge, thumping bottom. This is the most versatile Bass Big Muff ever. Pad on the input thats switchable between 0dB and 10dB ensures the pedal is optimized for use with both passive and active pickups. The blend allows a player to mix to taste the direct and distorted signals. There are three outputs and they are 1 4 inch effect out, 1 4 inch direct (buffered dry) out and XLR DI out give complete control of your output signal and sound. The foot switchable crossover section with a variable low pass filter on the dry signal and a variable high pass filter on the distorted signal give bassists the ability to sculpt their sound. The crossover circuit, in conjunction with the Blend control, lets you keep the low end clear and focused and the high end bright and cutting. The built in noise gate with an adjust threshold eliminates unwanted noise at any level. It also has a tough and compact die cast chassis and 9V battery included. Volume Works as a master volume for the entire pedal. Blend This mixes between the dry and distorted signals. Tone Provides a range of sounds from high treble to deep bass on the distorted effect only. Sustain Adjusts the amount of sustain and distortion. Gate Controls the input amplitude needed to open the noise gate. HPF When CROSSOVER is engaged the signal just prior to entering the distortion circuit is sent through a second order high pass filter. DI Output Low impedance output so that you can plug directly into a mixing console and recording equipment.