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DATA SHEET MODEL M61 SERIES
TRANSISTOR STEREO PREAMPLIFIERS
General: The Shure M61 Series Transistor Preampli-
fiers are designed to furnish the voltage gain and equal-
ization necessary to operate magnetic phono cartridges
(such as the Shure Dynetic Cartridges) and tape playback
heads with standard audio amplifiers. One of the primary
uses of the M61 is in conversion of Stereo systems from
ceramic cartridges to magnetic cartridges. It can also be
used without circuit modification as a preamplifier for
microphones. Advantages include complete freedom from
microphonics, extremely low noise, the use of 50 feet or
more of output cable in "phono" and "tape" positions,
and years of maintenance-tree performance. The operat-
ing temperature range is from 32