Moondrop Sparks TWS True Wireless Stereo Bluetooth 5.2 APTX Sport Dynamic in-Ear Earphone (CASE Blue)

Overall great sound, but know what kind of sound signature you’re getting here. The upper mids have been boosted and that can at time result in a very shouty experience at high volumes. These can get loud provided that you have the right ear tips in. The reason why I say that is because the fit is loose at the top which can cause the stem to wiggle a little bit much affecting isolation , volume and bass response. So if you have wider foam tips, they’re recommended to stop that wiggling around. The separation is very good and above average, it’s very spacious and open, and instruments have room to breathe and are not huddled together like in other monitors. The only negative with the imaging is that it can only really be appreciated in IEMs that have decent isolation, this one has average isolation at best. The reason I say this is that there are very intimate moments in songs in which instruments die down but still leave behind a trace of their existence and where they were before so when I’m by myself in a quiet space I can hear those beautiful details in music with the Sparks. In other weaker IEMs I can just Eq them to fix it. Right now the Moondrop link app is only on Android and you can’t eq bluetooth. Still though some of those details still make it through just fine without an EQ. Vocals are also hit or miss and can sound a bit nasally at times especially if they are naturally part of the lower mids. Despite all this though, you’re getting beautiful but easily interrupted imaging, a bright sound signature with slightly recessed vocals, and you’re still getting a true wireless experience.

Had these for about 20 days and they've been solid for the time I've had them so far, although the manual for touch controls is mildly confusing on some of it's instructions.Decent pair of IEMs. While I wouldn't use this for critical listening, the sound quality is quite good for the price and I haven't run into any songs on my playlists that just sound off with these on.The moondrop link app doesn't seem to provide an option for precise EQ adjustment but you do get a decent set of EQ options which will most likely have whatever preferred sound signature you'd want to hear. 90% of the time I use the studio setting but if I wanted a more laid-back sound I'd still have the wenneborstel setting to make these more leisurely to listen to .I put dekoni eartips on my pair which perfectly fit the size of these and allow for a deeper insertion giving a pretty good seal if you happen to have ears big enough to accommodate the size of these IEMs.The case isn't the best there is and feels a little sketchy on the hinge, it's also a bit bulky but it doesn't really bother me since most of the time I'm out I'm wearing cargo shorts or a coat so I almost always have some baggy pockets to shove these into. If I wore jeans and khakis more often then I'd have a complaint here but as I said earlier, it's not a big deal for me.

Overall these are solid.Pros- Connection is greatBattery life for me is plentyUSB c chargingCase is made very well, though a bit bigNozzle is very long, which is great for me as it provides a good seal and enters my ear just as much if not more than my IEM's.Great looking designsSound, when EQ'ed is really great for TWS.Cons - needs eq. They fit really deep in my ears and naturally I get a ton of bass. Rolling that off a bit and bringing the mods forward made them really shine for me.They can Sound a bit harsh, I may need to spend more time EQ'ing but I definitely experience some vocal shout (I think that's the term, just really harsh upper mid range). The midst we're either too soft or too aggressive for me. But it's not a deal breaker especially for just going out

UPDATE: They're working again!So a few months ago I got these working again. I thought I should let people know.So as far as I can tell there is no documented way to truly "reset" the charging case itself. I think it was bugged out or something weird, I don't really understand what was going on, but it was stuck not able to charge the earbuds, or at least not *showing* the charging lights. When I had tested it out, the stock cable connected to my PC for charging (5V) as others had reccomended, as well as a bunch of different cables and chargers. Nothing worked.Here's my theory on what happened, so take this with a grain of salt:The charging case was effectively dead with a very low charge, not enough to charge the earbuds at all, however, it still had some residual charge. I think having the residual charge in there let whatever bug (either software or hardware) that was preventing charging to persist.I left the charging case alone for many months (it was too late to return them by then) and forgot about them. In that time, both the case and the earbuds completely died. I *think* this completely reset the charging case.On a whim I decided to try charging them one last time, and miraculously it worked! The case started charging again. I used the stock cable that came with the earbuds and plugged them into my PC in exactly the same way as before. Again, the only thing that changed between previous attempts was the battery level of the charging case.Again I'm no engineer, I don't know the real reason, but this appears to be what happened. Regardless I'm happy to have these earbuds back, they're great looking and sound good. And the battery life is still excellent despite being dead for eons. I've increased my rating because of that.OLD REVIEW:These headphones were working great — awesome sound, great battery life, no technical issues, etc. Then two weeks ago I took a trip and didn't bring them with me. I left them inside the charging case in my desk drawer, not plugged in, for about twelve days. When I returned, the charging case no longer lights up or charges. I've done all the reset procedures, tried different cables, spent hours of my life looking on forums for fringe solutions... but the charging case is just dead. It was a great pair of earbuds before it became a rock.