Hi-Fi Preamplifier circuit

This circuit was submitted by Graham Maynard from Newtownabbey, Northern Ireland. It has an exceptionally fast high frequency response, as demonstrated by applying an 100kHz squarewave to the input. All graphs were produced using Tina Pro.

preamp circuit

The Preamp’s Bode Response
bode plot

Squarewave Response with 100kHz Input Signal Applied
squarewave response

Total Noise at Output Measured with 600R Load
noise plot

Signal to Noise Ratio at Output
signal to noise ratio

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