Nelson Pass's FirstWatt series amplifiers have many interesting designs. I built several of the most interesting devices for myself. Here is one of them: FirstWatt F4. This is a Class A design with no negative feedback, no gain, and pure current amplification.
After the completion, this unit brought me endless troubles: because of its gainless characteristics, I had to find a front-end device with a large voltage swing. (So you know why I paid attention to the preamp)
In fact, the Spec of this design is [email protected] THD
After the completion, this unit brought me endless troubles: because of its gainless characteristics, I had to find a front-end device with a large voltage swing. (So you know why I paid attention to the preamp)
In fact, the Spec of this design is [email protected] THD
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