Fender Engager Boost Pedal for Electric Guitar | The Music Gallery
Amazon.com: TC Electronic SPARK BOOSTER Awesome Booster Pedal with Gain Control and Active EQ : Automotive
ThroBak Overdrive Boost | Reverb
Amazon.com: Vivlex LEF-318 Boost Guitar Effects Pedal Analog Mini Overdrive Booster Clean Boost Pure Boost Pedal for Electric Guitar and Bass with True Bypass Switch, Full Metal Shell : Musical Instruments