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A high gain pre-amplifier with headpgone output. Ideally suited for use with a parabolic dish for recording distance speeach or bird sounds.
EFK 2001 Mini Pre-Amplifier
EFK 2002 Guitar Pre-Amp Tone Control
EFK 2003 Two Transistor Pre-Amplifier
EFK 2004 Three Transistor Pre-Amplifier
EFK 2006 Graphic Equalizer
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