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
The O2 requires a 13.5 to 22 volt AC to AC power supply with a minimum 14 volts recommended, minimum 200mA, no maximum. The Supplied AC to AC adapter is model SP120-12 is rated at 12 Volts 220 mA. This is disturbing because the AC adapter included with my 1st drop O2 Massdrop amp was well above the required spec at 15 volt 500mA (and is a lot heftier, 8 ounces vs 5).
I did not know that official O2 designs were allowed to not meet spec, and of course, if it does not meet spec on this, the only visible component, it makes me wonder if there are other areas that do not meet spec.
The wrong font on the front lettering ("Headphone" not bolded) is just carelessness, but providing below spec components seems like cheating. Please set me right on this if my information is wrong. Or let me know if I am the only one with a below spec power supply. See attached photo.
I imagine this was a change made by the Chinese manufacturer without Massdrop's knowledge, and that they will get them to ship us the correct one.
Whether or not you actually like that is of course your personal taste, but "carelessness" is unfair.
O2 (Bold) Headphone (Normal) and Amplifier (BOLD) is careless or tasteless. The bookended different fonts will look like a mistake to almost everyone.
Given the feedback we received from the community, the ability to offer an 220V option was on top of the priority list for round 2 of the drop. We decided to switch our power adapter supplier to one that is able to offer both 110V and 220V variants that are certified with appropriate FCC and CE compliances.
The newer power adapter, while less powerful at its limit, is more consistent and reliable at the throughput it is rated for. And considering the additional certification process it went through, it is arguably a higher quality part than the adapter included in the previous drop.
The voltage output for the new AC adapter varies given the current draw required by the end point. The power adapter is rated for 12VAC @ 220mA, and as the pictures attached below indicate, the power adapter outputs 14.9V with no load, and 14.2V while it is powering an O2 playing music at a high gain setting. This is completely within the requirement as specified by the design.
And lastly, if there's any reason you feel your O2 isn't performing as it should, just be sure to open up a Support ticket via the Massdrop Support page. We'll be happy to help however we can, and facilitate with the replacement process where appropriate.