A look at how vintage pedals for guitars hold a unique charm and link to the past can be seen in the following article. The article gives information about why using a vintage pedal is a good thing for certain musicians, while not so good for others. Ultimately the individual needs to decide if it is worth the extra cost to buy these products.
Read the full article here:
Vintage pedals retain their charm.
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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?