Sennheiser PC37X randomly goes bad after disconnecting the cable ?
Greetings, Yesterday I was using my headset like normal with my macbook, just listening to music and on a call with people like usual, and the headset was perfectly fine. The stock wire that came with the headset is extremely long and yesterday it annoyed me very much that it kept getting tangled with itself, so I decided to see if the cable is replaceable. I pulled out the cable from the headset and saw the adapter, and looked online for a replacement. Upon plugging it back in, the audio sounded extremely muffled and washed out. Im not sure what I did wrong to make it mess up like that as I've always taken good care of it, ive had it for about 2 years and its always just been chilling on my desk, but anywho I thought the cable just went bad and ordered a replacement. The replacement came, and the issue is still persistant, so I am not sure what the issue is I've tried multiple different headsets and the issue is not with the port, and I also tried it with my windows laptop and...
Apr 23, 2024
Furthermore as there are no pictures other than the stock image it's not really clear how the single ended input to balanced output conversion is done. Probably a few opamps on the bottom side of the pcb driving the pairs of transistors.
Ground is needed on single ended setup where current flows from each channel to the common ground.
This amplifier is a bit strange as it's not a fully balanced amplifier in today's context. Today when talking about a balanced setup one needs a DAC that has balanced output and that is then fed to a balanced amplifier via XLR connectors and in the end thru a balanced XLR connector to individually wired headphones.
This amplifier has a standard single ended signal input - be it from your phone, mp3 player, usual DAC, cassette player, portable radio, walkman, etc etc. Standard RCA connectors. Single ended is the audio standard that consumers know - this amplifier internally converts it to a balanced signal, amplifies the balanced signal and outputs that. Even if you already own a balanced DAC you can't use it with this amplifier, or must use the single ended output of an expensive balanced DAC - that makes no sense.
So it's a poor mans (half-)balanced setup. But it's priced so high that I'd call it a rich mans stupid (half-)balanced setup, for this money you can already get amplifiers that are fully balanced in all the steps (balanced input and output, no internal conversion from single ended to balanced internally).