For those who requested [Hans_Daniel] what he discovered by constructing a tube audio amplifier with a dozen tubes that he discovered, the reply may simply be, “don’t wind your individual transformers.” We had been impressed, although, that he went from not figuring out a lot about tubes to a good looking amplifier build. We additionally just like the title — NASS II-12 which apparently stands for “not a single semiconductor.”
Even the chassis regarded actually good. We didn’t know textolite was nonetheless a factor, however apparently, the retro laminate remains to be round someplace. It appears like a high-end audio element and with the tubes proudly on show on the highest, it must be a variety of enjoyable to make use of.
In fact, there have been points to work out. You’ll be able to learn his story about his transformer issues and there’s a floor downside producing some noise. The amp can ship 15 watts with out noticeable distortion, in keeping with [Hans]. We had been just a little unhappy although that there wasn’t an audio clip or a YouTube video so we may hear for ourselves.
We’ve definitely seen quite a few tube amps through the years. If you need a 1963-vintage training on how they work, you solely have to observe the Military video beneath that we covered some time back.