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Pre Amp circuits

(Small signal amplifire,Pre microphone...)
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Portable Headphone Amp
Another contributed circuit, this is a complete portable headphone amp that features crossfeed.
(11-Sep-2005)---269

Preamp/ Crossover Muting Circuit
Muting circuit suitable for all line-level applications.
(11-Sep-2005)---265

Preamplifier Power Supply
Uses External AC Adapter. Safe and effective, low noise and no hum
(09-Sep-2005)---128

Preamplifier suitable for guitar or microphone
This preamp is very simple, and will work under tough conditions.
(16-Sep-2005)---393

Simple High Quality Hi-Fi Preamp
simple, high quality preamp. Has all the facilities normally expected
(09-Sep-2005)---125

Stereo Pre amplifier with Bass-boost
This preamplifier was designed to cope with CD players, tuners, tape recorders etc., providing an ac voltage gain of 4, in order to drive less sensitive power amplifiers.
(08-Sep-2005)---20

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