Enter an old Radio Shack P-Box stereo amplifier kit. After a few modernizations and tweaks, the result is an 8-transistor stereo amplifier that’s aesthetically pleasing, sounds great ...

Is this £10 Chinese audio kit better than any transistor amp simply because it has a couple of tubes? We don’t think so. There’s one more moment in which you’ll hear distortion mentioned in ...

In this chapter we will study the transistor differential-amplifier circuit. This is a very important transistor circuit, as it is the basis of the operational amplifier (or op amp), one of the most ...

The HiFiMAN SERENADE Wireless DAC/Headphone Amplifier offers lossless streaming over Wi-Fi for $200 less than its predecessor ...

The British high-end hi-fi brand is reviving the design 57 years after it first made transistor-based amplifiers respectable. Teased in prototype form at May’s High End audio show in Munich ...