Which headphones of Drop's currently available?
I have some rewards points to burn but there's no obviously good options on Drop right now for headphones Contenders Ultrasone - maybe? I don't own any Ultrasones, so curious. Looks like garbage travel headphone which could be useful also. Beyerdynamic DT990 Pro. - Maybe? I have the DT 880 Good price point, really uncomfortable headphones but could be interesting to try the upgraded version. E-MU - strong contender but $400 is a bad price point for what it is. Which of the above would you choose and why? Nothing else on Drop is relevant to my interests, because Already own 6xx 820 800 s Ether cx Garbage / Consumer grade Meze 99 - garbage bass canons, hard pass No gaming headphones obviously Sennheiser wireless - no to wireless/bluetooth Hifiman - I have 2 of drop hifimans and they make really bad cheap shit on Drop, hard pass on HE-R7DX Aeon - I own the closed, Drop refuses to address #padgate so no reason to buy open Beyerdynamic 177x - wireless, nope Too similar 8x / 560s...
Mar 28, 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.