Mac DeMarco’s MXR M-133 Micro Amp
This pedal was seen on Mac’s pedalboard around 2014, but he apparently also used it in 2017 during the “This Old Dog” tour. Towards 2020 he moved on to a JHS Colour Box, which essentially does the same thing – it boosts the signal, which is something guitarists usually do when they are about to play a solo.
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