Electrical pick-up GPU No 2
In brown painted metal box with two binding posts for the connecting wires at the top. A needle can be inserted in the needle holder below.

By replacing the acoustic reproducer of a gramophone by this magnetic pick-up and connecting it to a radio or amplifier, greater amplification was possible.
Brown supplied a free adaptor plug that made it possible to use the electrical pick-up, without altering the wiring of a radio or amplifier.
Brown also claimed that needle scratch could be reduced considerably, but that was mainly because this kind of early sound boxes produced little treble and because the signal-to-noise ratio in the manufacture of records had improved with the introduction of the electric cutter.
Brown introduced this product in November 1928.

Adaptor plug

The original price of the pick-up was 23 shilling.
Serial number none
Made in 1928
Purchased in 2013
Sold in: 2022
Dimensions (h x w x d) 7.5 x 5.4 x 3.5 cm (including connecting sleeve on the back)
Weight: 140 grams
Impedance 2000 ohms

Picture of the Brown GPU No2 element in "The Brown Budget", November 1928

The inside of the sound box

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