Want a high impedance preamplifier circuit? For a ceramic record player, etc. Make the emitter follower circuit has low noise causes sound concise.
Try medium Impedance Preamplifier circuit using only one transistor. Use a common emitter. Have a lot of circuits use this. try it and learn with fun.
For maximum efficiency, reducing various problems well. Let's know the characteristics of CMOS and how to use it.
Your amplifier may sound better than before. Just change the appropriate power supply circuit. Multiple levels of output voltage. For example 15V Dual regulator for pre amplifier. And 38V Dual for main amplifier etc.
The best learning is Doing it. Imagine you can use your life is better with your own electronic project. And at the same time, you learn digital basics, flip-flop switch circuit. Using CD4027 JK flip-flip. It’s great, right? Let’s get started to see the two circuits.