Daily Archives: May 7, 2014

stereo coffee LDR preamplifier

Posted on May 7, 2014 by ecosprog

Roughly four years ago I saw my first LDR, or opto-coupler pre-amplifier. I was intrigued by this unique approach to controlling the signal output to an amplifier, but at the time funds were limited, and I didn´t have time for … Continue reading →

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