Review on Bose A20 Aviation Headset - Standard Dual Plug Cable, Black by Dan Chunn

I experienced the same problem twice with two different products. When I wired this A20 to an AUX source, the headset wasn't able to transfer the sound perfectly, especially in the low-mid volume range. , and the root. I've found that this problem occurs when I turn it up to around 30% of full volume. I compared it to another Bose A20 owned by a colleague to see if this is a normal situation. This happened only for me. So when I first had this problem I just took it back to the dealer. I ordered a new A20 through AMAZON and received it yesterday. However, when I encountered the same situation again, I thought that I could not solve this problem by simply returning and ordering the same model. I do not know what to do.