There have been various threads about the hissing noise that is experienced with the standard headphones, or indeed any headphones that don't use in line volume control. I have purchased an in line volume control adaptor for my Sennheiser headphones and at first it was fine, the hissing was nowhere to be heard. However, I have noticed that the unit over time gradually deteriorated, and the hissing got worse and worse. The sound quality of the binaural beats has also deteriorated, and every time I use a program they sound slightly different. Something is not right. I have tried it without the in line adapter and the background noise is totally horrific. I would try to install the OS again but I can't get the COM port to stay open with my current Mac Virtual Machine (as described extensively in another thread). I have no interest in using the Procyon Editor as it seems too much like hard work and just want to use the standard sessions. But this is becoming increasingly annoying. I have already reinstalled the OS once (when I managed to get the COM port to briefly work months ago). Is another install going to help? Or is this unit faulty? Is this a common occurrence for the Procyon?
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