Amazon.com: Sondery Boost Pedal for Electric Guitar and Bass, Mini Clean Booster Pedal, True Bypass, More or Less 14dB Change for Frequencies Under 250Hz or Above 1KHz, Art Design Series Pedal :
Orange Two Stroke Boost and Equalizer Guitar Effects Pedal Clean Boost | Miami-Guitars
Guitar Boost Pedals - Your Ultimate Guide from Andertons Music Co.