Amazon.com: JOYO Boost Pedal Classic Circuitry up to 35dB Clean and Clear Boost for Electric Guitar Effect - True Bypass (Roll Boost JF-38) : Everything Else
Teisco Boost Pedal
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 :