Master-Dik is the third EP by American alternative rock band Sonic Youth. It was released on November 4, 1987, in the United States by record label SST,[8] and on January 22, 1988, in the United Kingdom by label Blast First.[9]
Master-Dik's liner notes reprinted a rant by Ben Weasel from the November 1987 issue of the fanzineMaximumrocknroll. In the article, Weasel criticized Sonic Youth, Hüsker Dü and several other indie rock bands from the 1980s for eschewing punk rock for a boring classic rock sound.[11]Etchings on the vinyl's inner groove read "Ciccone death rock dream tinkle" on one side, and "Humpy pumpy psychoacoustik frenzy" on the other.[12] When it was originally released, the album sleeve bore a sticker reading "Not as good as Atomizer, so don't get your hopes up, cheese!" The same sticker had originally appeared on Big Black's 1987 EP Headache, and referred to that band's previous album.