UK company Mastersounds have forged their own path as manufacturers of handbuilt rotary mixers, as well as other products aimed at DJs who value sound quality. Along with their latest Radius MK2 mixers, they’ve also released a standalone isolator, the ISO4, which offers both 3 and 4 way modes, and balanced connections. Mojaxx gives it a full review for the new episode of Beatsource Tech, over on Youtube now.