Hi-Fi Preamplifier

By Graham Maynard from Newtownabbey, N.Ireland
Notes:
This circuit was submitted by Graham Maynard from Newtownabbey, Northern Ireland. It has an exceptionally
good high frequency response, as demonstrated by applying an 100kHz squarewave to the input. I have
produced some response graphs using Tina Pro to highlight these characteristics.

The Preamp's Frequency and Phase Response

Squarewave Response with 100kHz Input Applied

Total Noise at Output Measured with 600R Load

Signal to Noise Ratio at Output

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