The Solid State Transistorized era

was in the 1960’s a time that I can never go back to experience what’s on those years when it comes to music equipment and gadgets. My old uncle told me that those music gadgets are cool, it revealed the true color and signature of music, a pure and dynamic sound.


I remember in the mid 70’s, we own a phonograph, it was called Transistor Phono, we have also an AM Radio – it was called Transistor Radio, we got that Black & White National Television with a clear emphasis onTransistor TV. The Transistor is a brilliant invention which accelerated the development and advancement in electronics, thanks to those brilliant guys John B., William S. and Walter B. of Bell Labs (1948).

The present:

In this digital era, the discrete transistor design is fast being replaced by a compact semiconductor called – Integrated Circuit or popularly known as IC. Most of the audio products you can find in the market is now design with IC hand in hand with digital processing and interface — a scheme which is needed in the information age we are living now.

the experienced and Learning :

But as my uncle said, pure, non-digital processing revealed the true color of music – he is referring to the pure analog processing music gadgets in his time. No wonder that many audiophile build their own power amplifier with pure analog processing with discrete Transistor design or even the primitive Vacuum Tube design.

The DIY Learning and Improvement Issue No. 28 with the DNY40W discrete power amplifier project will take you back to the analog era and let you experience the adventure to build your own – personal pure analog process power amplifier in the power of your finger tips.

What’s more? It’s fun!! Because it provides you the knowledge, a self-learning (diy learning) at the convenience of your free time, a diy experienced of knowing the circuit better – its function and operation, diy assembly and diy testing.

Thanks to the effort of the following guys who collaborated and rocks this Project (Danny, Arnel, Dandy, Ariel and Michael Angelo – The Philippines).

Back to Basic:   Read Detail Explanation

Block Diagram& Circuit Diagram:  Read Detail Explanation

Hardware Revision:  Would You Like to Know More?