Germanium transistors are actually starting to draw in a fair amount of attention in their own right. The following article is an invaluable resource to people who want to improve in a few important ways. Most will want to check how they can customize the approach that they take to this process. There are a few different types of transistors that will improve on the final sound quality that most tend to get.
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Germanium transistors.
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?