The first Mark Levinson car 5.1 surround sound system appeared on the Toyota Crown Majesta in 2004. Current UK Lexus models available with the Mark Levinson Audio System include: CT 200h Premier, IS 250/300h Premier, GS 300h/450h Premier, RC F Carbon, NX 300h Premier, RX 450h Advance and Premier, LS 460 Luxury and F Sport and LS 600h L Premier. Equipment history Amplifiers ML-2 Class A Mono Amplifier with regulated power supplies ML-3 Power Amplifier ML-9 Power Amplifier ML-11 Power Amplifier Preamplifiers LNP-1 Preamplifier LNP-2 Professional Preamplifier JC-1 Moving Coil Cartridge Preamplifier JC-1AC Moving Coil Cartridge Preamplifier JC-2 Straightline Preamplifier ML-1 Preamplifier ML-6, ML-6A, ML-6B Preamplifier ML-7, ML-7A Preamplifier ML-8 Microphone Preamplifier ML-10, ML-10A Preamplifier ML-12, ML-12A Preamplifier Power Supplies PLS-150 PLS-151 PLS-153 PLS-154 ML-6 Crossovers LNC-2 Electronic Crossover Tape Machines ML-5 modified Studer A-80 professional tape recorder with custom electronics System Mark Levinson HQD System This was Levinson’s tri-amped active replay system. Each of the two channels comprising a woofer using a 24” Hartley drive unit, a pair of stacked Quad electrostatic speakers for the midrange and between the two Quad speakers a Decca (Kelly) ribbon tweeter for the treble, the latter modified by having the horn removed. Each speaker was driven by a separate ML-2 amplifier fed by a LNC-2, this in turn being fed by an ML-1 preamp. References External links Mark Levinson Audio Systems Ltd. vintage audio gear Music Man - A Brief Biography of Mark Levinson by Barry Willis Audio amplifier manufacturers Audio equipment manufacturers of the United States Auto parts suppliers of the United States Harman International Electronics companies established in 1972 In-car entertainment Manufacturing companies based in Connecticut 1972 establishments in Connecticut Companies based in Stamford, Connecticut