When you buy through our links, we may earn an affiliate commission. With all the modern amplifier and effects technology available today, there's still something to be said for the classic sound you ...

This simple scheme is based on the circuit shown below (Figure 1) in my recent article [1]. Figure 1 Using common transistor optocoupler to achieve a tube-like sound. It is known that the main feature ...

So you’ve made the decision to buy an external headphone amplifier for your desktop setup. Awesome. It’s an easy way to make your nice pair of wired headphones sound better (because your computer’s ...