IRIN EXTREME Metal Pedal Effect Distortion Pedal High Gain Overdrive Pedal True Bypass Guitar Accessories - AliExpress
MXR M233 Micro Amp+ boost pedal - Macdaddy Music
MXR M133 Micro Amp Gain / Boost Pedal | Sweetwater
Amazon.com: JOYO Bass Guitar Pedals High Gain Overdrive Effect Pedal with Independent Mid Frequency and Gain Boost for Bassist Electric Guitar Bass (DOUBLE THRUSTER R-28) : Musical Instruments