Up for sale is a vintage Maestro Full Range Booster guitar pedal in excellent condition. Everything is completely original without any mods or repairs (except for the control knob and one of the replaced battery clip) and works perfectly without any issues. Also comes with the original retail box and all the paperwork as shown. Check out all the hi-res pics and ask any questions you might have. Get images that make Supersized seem small. Track Page Views With. Auctiva’s FREE Counter. The item “Maestro Full Range Booster Vintage Guitar Effects Pedal Fuzz Power Booster” is in sale since Monday, August 24, 2020. This item is in the category “Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Fuzz”. The seller is “dseffects” and is located in Pennington, New Jersey. This item can be shipped worldwide.