versions. Revox was one of the first manufacturers to market a plasma television set, the model E542 in 1999. Before that, they commissioned Loewe to manufacture a limited number of models of S-VHS and VHS video cassette recorders and CRT television sets branded with the Revox name. A DVD player bearing the Revox name (model S27) was built by the French company Micromega. Current technology In 2002, Revox introduced with the Re:system M51 a modular audio video system in the market. This system can provide up to 32 rooms in 4 different listening zones with music. Different modules allow the user to select which sources he would like to use in his home, available sources (modules) for the M51 and M10 are amongst others FM-tuner, SAT-radio, Internet-radio, Multiroom, Audio server and also Audio streams. Solutions are available for all imaginable application possibilities up to the control via Apple products with the corresponding Apps. The operation of Multiroom require the availability of the corresponding Multiroom module and small amplifiers of the type M219 in the remote rooms. Also the first audio server of the company, the Revox M57, was perfectly in line with the Multiroom concept. The M51 MKII is available with two different amplifiers. The analogue version performs 5 x 60 Watt sinus, the digital Class-D-amplifier 5 x 200 Watt sinus. The M-series was extended in 2006 by the M10, a 19“ rack solution as central nerve and source centre and in 2010 by the M100, an audiophile Hifi-stereo amplifier with 2 x 200 Watt sinus power, FM-tuner and DVD-drive in an extremely compact housing. For the models M10 and M51, the latter is currently available in version MKII, the insertable modules are identical. For the M100 the modules, except for Multiroom, are offered as pluggable supplementations to the basic model. In the Multiroom operation the control of the rooms is effected by wall control units of the type M217/M218, by the remote controls M207 or M208 or by Apps, which are momentarily only available for the iOS-operating system. In addition to the pure Audio server M37 MKII the Multimedia server M117 was introduced in 2011. In 2012 Revox presented the new audiophile network receivers Revox Joy S120, S119 and S118. The workmanship of the devices is typically for Revox on a very high level and is characterised by the selection of precious materials like aluminium and glass. At the