EMT 139st b, serial no. 10131

Original legendary stereo phono tube equalizer amplifier.

For sale a wonderful and very rare pre-owned EMT 139st b stereo phono tube equalizer amplifier, serial no. 10131 from July 1965, for use with turntables EMT 927 and EMT 930.

The EMT 139st stereo phono tube equalizer amplifier was designed in 1959 (price in 1959 DM 700,--) as partner of the EMT 139 mono phono tube equalizer amplifier to fulfil the need of 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 was provided with de-emphasis characteristics for DIN, NARTB and RIAA, the second version of the EMT 139st was (re)designed in 1963 with de-emphasis characteristics for NAB-RIAA-DIN 33/45, DIN 78, BBC and FLAT and was called EMT 139st b.
The EMT 139st b was in production with EMT until 1967 after which it was succeeded by the solid state version EMT 155st.

The EMT 139st b is equipped with tested and selected vintage TELEFUNKEN ECC81 & ECC83 smooth plate tubes, is completely checked and adjusted, is in superb working condition, appereance is near mint and comes with a new (reproduced) screened control panel and a copy of the original EMT 139st b circuit diagram, technical information, instructions for operation and EMT Courier no. 5.

Delivery worldwide in professional packing.

Price: Sold to a new proud owner in Wuppertal - Germany.

Note 1: The EMT 139st b can only be used in earlier EMT 927 and EMT 930 turntables with serial no’s before 14725 with the necessary power supplies for the EMT 139st and EMT 139st b.

Note 2: Turntables with serial no’s higher than 14725 can be upgraded with the new 139st b power supply upgrade kit to fulfil the possibility of using the EMT 139st b in young EMT 927’s and EMT 930’s.