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Realistic Battery Operated Stereo Preamp

Battery Operated Solid-State Stereo Phono Pre-Amplifier

Realistic Battery Operated Stereo Preamp


This stereo pre-amplifier is designed so you can use a magnetic phono cartridge (low level) with an amplifier/receiver/console which only has high level inputs such as crystal or ceramic phono, line or AUX inputs.

Typically a magnetic cartridge provides better sound quality and is less wearing on good records.

The pre-amplifier is housed in a sturdy but compact metal case the size of a package of cigarettes and operated from a single rectangular 9-volt transistor radio type battery.


Input impedance: 50K ohms

Output impedance: 50K ohms

Gain: 34dB

Rated input level: 3mV

Maximum permissible input: 38mV

Output level: 1.8V RMS

Frequency response: 30Hz to 20kHz

Equalisation: RIAA +-1dB

Signal to noise ratio: 50dB

Crosstalk: better than 50dB

Transistors: four (4) silicon transistors

Battery 9V

Size: 91 x 54 x 30mm

Weight: 156g less battery


42-2111 schematic  English - adnadeau

42-8930 instruction/owners manual  English - turnaround

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Realistic Battery Operated Stereo Preamp / 42-8930 Preamp owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Realistic.