EMT 139St Stereo Tube Mc Phono Equalizer

More detailed photos of German legend ready from refurbishing by Ing JP Hans van Vliet. Partly recap ,  an absolute rarity. A wonderful original EMT 139st stereo tube MC phono equalizer amplifier in perfect working condition, serial nr. 4455. 

One of the first produced in its release year 1959, previously used by SRG (Schweizerische Radio – und Fernsehgesellschaft / Swiss Radio – and TV corporation) for some decades. 

Background and history

The EMT 139st stereo phono tube equalizer amplifier was designed in 1959 (price in 1959 DM 700,–) as a partner of the EMT 139 mono phono tube equalizer amplifier to fulfill the need for stereo sound reproduction with the professional studio turntables EMT 927 and EMT 930.  It was and is a professional state-of-the-art stereo phono tube equalizer amplifier with top quality in- and output transformers to amplify low-level signals of dynamic (MC) cartridges to studio balanced line level (+6dB). The first version, EMT 139st, was provided with de-emphasis characteristics for DIN, NARTB, and RIAA,  the second version, EMT 139st b, was (re)designed in 1963 with de-emphasis characteristics for NAB-RIAA-DIN 33/45, DIN 78, BBC and FLAT. EMT 139st b was in production with EMT until 1967 after which it was succeeded by the solid state version EMT 155st.