Part 4: Amplifying mic level input signal

On our last blog, we talked about distortion and harmonics. and how this enriches 2nd harmonics in our signals. Here’s a nice animation showing how the 2nd harmonics get stronger the more we push our preamp harder, and note how we’re getting soft, assymetrical clipping…. thanks to our

Part 3: Distortion & Harmonics. Solid-State vs. Vacuum Tubes

On my last blog post (, I added a buffer to the output of our vacuum tube stage. This additional buffer stage lowered the output impedance, while presenting a very high input impedance to our vacuum tube stage. This will allow us to couple to the next stage