Hi-Fi Preamplifier
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 