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Prechamp: 2-Transistor Preamplifier PCB 
PCB for the Prechamp: 2-Transistor Preamplifier.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
46 x 36mm.
Cat No SC0874. Price: AUD $5.00
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yes (7 available). Estimated dispatch time: up to 3 days
Project: The PreChamp 2-Transistor Preamplifier (July 1994)
Feature: How To Do Your Own Loudspeaker Measurements
Project: Infrasound Detector For Low Frequency Measurements
Other items relevant for these projects:
The PreChamp 2-Transistor Preamplifier:
Silicon Chip article scan, July 1994 - The PreChamp 2-Transistor Preamplifier
PreChamp 2-transistor preamplifier PCB pattern (PDF download) 
Infrasound Detector For Low Frequency Measurements:
Champ: Single Chip Audio Amplifier PCB 
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