Pre-Amps

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Assorted Pre-Amp Circuits.zip

Audio_Preamplifier_with_Digital_Volume.zip

Balanced Zen Line Stage by Nelson Pass.pdf

Balanced_Tube_Pre-Amp.zip

Bride of Zen - A Single Gain Stage Preamplifier by Nelson Pass.pdf

Combined Power supply and Audio Amplifier.pdf

DISCRETE_OPAMPS.PDF

Get More Power Out of Dual or Quad Op-Amps.pdf

Ground Loops.PDF

Grounding and Shielding for Sound and Video.PDF

HAFLER_Series915_preamp.pdf

headamp1c.gif

Inverse_riaa_converter.jpg

Inverse_RIAA_response_generator.pdf

Line Amplifier.pdf

Line_to_magnetic_phono_input_with_RIAA.gif

Make_linear_pots_almost_log_taper.pdf

Phase Linear Spatial Control Module.pdf

Phono Input Converter.jpg

Pre-Amp_-_High_Quality_-_3_Transistors_Studer.pdf

Pre-Amp_-_Zetex_Low_Noise_Audio_Input_Stage.pdf

Pre-amp_using_12AU7_tubes.gif

Simple audio preamp.gif

Stereo Image Expander.pdf

Stereo Width Spreader.pdf

Surround Sound Circuits.pdf

Surround Sound Decoder.pdf

Switching-Audio_-_Audio_Router.pdf

Switching-Audio_-_Audio_Switch.pdf

Switching-Audio_-_Switch-Sound_Activated.zip

Switching-Audio_-_Voice_Activated_Switch_&_Amplifier.zip

Switching-Audio_-_Voice_Operated_Switch.zip

Switching-Audio_-_Voice_Operated_Switch_-_2.zip

Use Rotary Potentiometer To Drive Solid-State Volume Control.gif

Volume_Control_-_Audio_Fader.pdf

Volume_Control_-_Audio_Fader.zip

Volume_Control_-_Better_Volume_(and_Balance)_Controls.PDF

Volume_Control_-_Dallas_app88.pdf

Volume_Control_-_Dallas_DS1666_Audio_Digital_Resistor.pdf

Volume_Control_-_Dallas_DS1669_Electronic_Digital_Rheostat.pdf

Volume_Control_-_Dallas_DS1802_Dual_Audio_Taper_Potentiometer.pdf

Volume_Control_-_Panner.zip

Volume_Control_-_Panning_Circuit_-_Voltage_Controlled.pdf

Volume_Control_-_Precision_Attenuator_-_Digitally.pdf

Volume_Control_-_Programmable_Gain_Amplifier.pdf

Volume_Control_-_REMOTE_VOLUME_CONTROL.zip