Performance The A is very simple to use owing to the fact that there are only three rotary pots to play with, and as such I found that I could very quickly dial in the sound that I was after. Buy PDF version. In fact it impressed me so much that, for the first time, I set out to buy a version of the real thing, and after a quick visit to a popular online auction site I was the proud owner of my first hardware compressor, the DBX A. The rotary pots are non-detented and provide just about the right amount of resistance to allow you to make quick changes without worrying about overshooting your mark. The faster you set it, the more natural and smooth the sound will be.
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