LEXICON DC-1 ver.2.0 put it on the market 1997 (ver.2.0) List price:700,000 Lexicon had made medical digital equipments from 1969. in 1979, they accumulate a mass of data from all over the world that come off splendid three-dimensional expression. We get DC-1/DTS. It's the highest class mode. This sound rise above a A/V amplifier.