videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Sound Demo - Tonepad Flanger 301 (Ibanez Flanger 301 Clone), DIY - Why Bother?, DIY Guitar Pedals: Assembling a DIY Stompbox