NEW DS AUDIO DS-W2 OPTICAL CARTRIDGE SYSTEM December 8, 2017 Matej Isak And another interesting teaser. DS Audio from Japan, the manufacturer of highly regarded optical cartridge system is brining the all new DS-W2 cartridge + Equalizer set, that will seems to fit between DS-W1 and DS Master. More info to follow soon. www.ds-audio-w.biz