Check the listing for details. Wilson Effects Ram's Head Dirty Beaver (Muff Fuzz). Condition: New. Listed at 185.00 USD. Vintage style wiring that retains that vintage sound, remaining true to the original models! The Ram's Head Dirty Beaver a dirty, fuzzy Ram's Head Fuzz with some added toggles for additional tone shaping. These toggles remove diodes from the circuit to enable you to achieve a variety of sounds other than just your standard Ram's head Muff tones. These features also enable the pedal to not only shine on guitar but bass as well. So whether you are looking to achieve the infamous Ram's head Muff tones or your want to experiment around with several Ram's Head variants the Dirty Beaver will fit the bill perfectly. Not only does this pedal boast some fantastic artwork by none other than Mr. David Medel the interior is also a work of art. Built to the specs of the vintage variant of this circuit it also has one of the most unit circuit boards available in a pedal today. Designed by my good friend Tim Cooper of Faceless FX. Thanks for looking! - Kevin The Dirty Beaver is true bypass and is powered by an industry standard 2.1mm center negative power supply or 9v battery. It is also hand made from the highest quality components available today and is backed by a one year warranty. If you have any other questions please feel free to contact me through eBay or via email. For product demos please refer to my website or my You Tube Channel. Thanks for checking us out! - Kevin