![]() That level of modification could easily result in what would effectively be a new circuit, requiring more options to be built into our boards than is feasible. We don't provide transistor options that require a lot of changes to the circuit. We'll focus on "interchangeable" that is a simple swap, or a simple swap with some simple adjustments. "Roughly" because some are simple substitutions, some may require some simple tweaks, but nearly all could be made to work in most circuits with a bit of work. We'll divide them into groups based roughly on their interchangeability in effects circuits. We're going to classify them in a rather unconventional manner. There are a number of different ways to classify transistors - by the technology used in their design, their construction, their purpose, and so on. Our purpose here is to provide some information so you can select customized transistors for some of our modules. That's far too much to cover, interesting as it might be. We aren't going into the details of how transistors work or what they are doing in particular circuits. Sometimes they are used with other components to remove or boost various frequencies. Transistors are used in numerous ways in guitar effects. What Are Transistors Used for In Effects? Of course, tubes, transistors, and op amps are all still in use in guitar effects. And digital technologies replace op amps in some applications. Just as everything electronic gets replaced, op amps were a newer technology to replace transistors in many applications. In the world of guitar audio, they were at one point a new invention intended to replace old tube technology. Transistors are small electronic devices that can act either as switches or amplifiers. ![]()
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