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 Gene Edifier C3X 2.1 Speaker Sound Test All on Desk, Gene Edifier C3X 2.1 Speaker Sound Test (Instrumental, Vocal, Techno, Bass) + U2713HM U2515H, Gene Edifier S1000 Speaker Treble Bass Combination Sound Test