Walrus Audio 385 Overdrive, Guitar Effect Pedal, Volume, Gain, Bass, Treble, Power Supply Sold Separately.After endless hours of research on vintage Bell and Howell 385 Filmosound projector, Walrus has created a fantastic overdrive modeled after the projector's tone. Its simple, but effective controls, plus dual 6V6 output section make for a simple and extremely responsive amp that has an amazing compressed overdrive when cranked. The user is able to boost and cut bass and treble, allowing them to be creative with mid-frequency scoops and bumps. The pedal is internally running at 18v, which helps us nail the same dynamic feel of the amp in a stomp box. This means it is extremely sensitive to how hard you dig in â just like the amp. The 385 comes in a matte black finish with yellow ink featuring original artwork of a vintage Belle and Howell 385 projector.