My Telefunken Collection

MA 2

Photo of MA 2's Front
Photo of MA 2's Back
Photo of MA 2's Innards

Device Type

Integrated Amplifier

Start of Sale


Original Price

DEM 368,-

General Description

The MA 2 is the amplifier of Telefunken's 1981 entry component system M 2. It is a splendid example for the 'keep it basic' philosophy of this system. The only feature that could be counted as 'extra' is the loudness switch: even the auxiliary input that was otherwise considered indispensable is missing. Fortunately, they didn't leave out the phono input and preamplifier, so one could at least attach a record player without additional (switch) boxes...


Loudness switch, 2x20 W RMS


Phono Input, Tuner Input, Tape Input, Speaker Output (all DIN)

Technical Data

not available at the moment, have no docs

Common Failures

Photo of MA 2's Power Amp Section

Of course, the most sensitive section of every amplifier is the power section. The MA 2 makes no exception of that, and the lack of protective circuits makes things even more critical. Fortunately, the one unit I got only needed the power transistors replaced. Selecting replacement types is not difficult, since 20 watts per channel is a relatively small output power. Just beware that the transistors are darlington types. Using normal transistors will make the amp seem to work in the first moment, but the higher base bias will result in a hefty quiescent current - the repair won't last for long ;-)

In this case, I have used BD647/648 transistors as replacments, cheap and easily obtainable types.

Spare Part Numbers

(taken from Telefunken's 1981-1991 Service Handbook)

Position Order No. Designation
ICs, Transistors, Diodes
339 555 251 transistor 2 SB 751
339 555 129 transistor 2 SA 817 A
339 556 412 transistor 2 SC 1583
339 556 299 transistor 2 SC 1815 GR
339 556 466 transistor 2 SD 837 P,Q
309 001 221 transistor RCA 17520

Available Documents

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©2002 Alfred Arnold,