News post & update: eleccircuit.com |  |
| Low volts stereo preamplifier with tone control circuit Posted: 04 Apr 2015 03:29 AM PDT This is the simple stereo amplifier for headphone with tone control circuit that use 1.5V X 2 only. It is used for mini MP3 player or other small source. I like it that use a few parts and low power. How it works To begin with this circuit will connect the switch-S1, to apply the […]  |
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