Possible Product Consistency Problem
I purchased two A500 amplifiers to use on some computer speakers. They both exhibit audible distortion, especially on piano music. I came across this same complaint, as a result of a Google search, and I note that a poster in this thread also has a complaint about a defect in the output. I also have a friend that heard the same artifact on another A500, though I chalked this up as a defect that I have very low probability of encountering. Unfortunately, it would appear that the defect lottery has selected me as a winner. This is a strange defect that I have not read about occurring on other amplifiers. I am posting about my experience, despite that these may be isolated cases, because I started this thread. I also have a Behringer EP2500, and it operates perfectly. But I do think it odd that I purchased 2 A500s and both units have the same defect.
I am currently attempting to resolve the issue with Behringer's technical/customer service department. I will post the conclusion of this experience when complete.
-Chris