I don’t get why you get so much downvotes, because it’s not as obvious as people make it out to be and there are plenty of adapters. So it’s a good question actually.
But yes. The 3.5mm jack had the thing companies say they are striving for: simplicity.
DACs are nice and everything but the phone can just decide to not connect properly. The DAC can decide it had enough of your phone. In either case you’d need to reconnect them. And that means unlocking your phone, because a secure phone will block streaming to ‘unknown’ USB-C devices, unless they are unlocked during the negotiation phase. And if your connectors have become wonky for whatever reason: Well, no music for you.
And then there’s the issue where you have to have them at hand when you need them. In your car, on your person, while at work.
3.5mm is great because it actually “just works”. One of the few things that can claim such thing.
stealth_cookies@lemmy.ca 9 months ago
Yes, the 3.5mm jack is more durable than USB-C (since it is rotationally symmetric twisting doesn’t apply force to the connector), it maintains compatibility with billions of audio devices and doesn’t block your charging port if you use it.
whoisearth@lemmy.ca 9 months ago
Begs the question why aren’t charging jacks designed like audio jacks?
turmacar@lemmy.world 9 months ago
If you wanted them just for charging it would be fine. Barrel jacks are still pretty ubiquitous.
If you want them to also be data they get less great. They make 3.5mm/etc jacks with 3 “pins” and I assume more. But every time you’re inserting/removing the cable it’s rubbing past the insulators separating the contacts. Their failure rate is higher than something like USB-C where the 24 contacts are being pushed together instead of brushing past each other. It would suck if you put in your USB-barrel and one of the contacts broke/bent.
jasondj@ttrpg.network 9 months ago
Typical stereo headphones have 3 pins. Left, right, common ground. Tip, ring, and sleeve (not sure if the conductor order).
4-conductors used to be common for portable camcorders and early digital cameras. They’d put our composite a/v (extra conductor for video/yellow, still a shared ground). Tip, R1, R2, sleeve.
I’ve seen USB 2.0 (or perhaps 1.x) done over a 4-pin 3.5. And I’ve seen RS232 over 3.5 a number of times too (used to be common in ham radio in the 90s/early naughts).
rmuk@feddit.uk 9 months ago
It’s actually a bit crazy - and very impressive - that the cable I use to tickle-charge my phone at 15W could also be used to connect four 4K screens, an external GPU, multiple 10GBe network adapters all while providing well over 200W of power… if my phone supported and of that, that is.
stealth_cookies@lemmy.ca 9 months ago
There are plenty of products out there that use TS style audio plugs (more 2.5mm in my experience than 3.5mm) for DC power for portable devices. When you get to data transfer requirements, the higher pin counts of current connectors wouldn’t be space efficient.
Mango@lemmy.world 9 months ago
See, you just described a thing and made a statement, but I don’t buy that one bit. I’ve broken several 3.5mm plugs but never once a USB-C.
I’m on the side of 3.5mm in phones, but there’s a reason XLR and 1/4" are the industry standards for audio.
dog_@lemmy.world 9 months ago
I’m the opposite. I’ve broken several USB-C connectors, and not one 3.5mm
modus@lemmy.world 9 months ago
XLRs on phones? I can get behind that.
jasondj@ttrpg.network 9 months ago
I’m sorry what? The 3.5mm is better because it’s rotational symmetrical?
Thats a minor win. You rarely really need that rotation capability, and what little you need can be made up with thinner cables (which is easier with a digital signal and DACs in the headphone, which can’t be done compatibly with 3.5mm and people are dumb) The you also have to sacrifice connection friction to gain rotation, and that has tradeoffs.
It also really sucks at strain relief without massive dookie springs or rubber butts…and the bigger the strain relief, the more subjective it is to perpendicular force, which is really easy to do on a 3.5mm gold-plated iron/tin alloy.
Petter1@lemm.ee 9 months ago
3.5 jack port is definitely not more durable than USB-C. If you have good headphones, the change that the 3.5 plug is gigantic in length and the cable thicc AF which causes a lot of stress in the plug due to very large leverage. Additionally, I prefer to use the DAC integrated in my headphones rather than using the low quality tiny DAC in my phone. And in digital, the cable thickness does not matter really.
stealth_cookies@lemmy.ca 9 months ago
Very few people are plugging their large headphones into their phones though. For a more reasonable pair of portable headphones or IEMs the size of the plug isn’t a problem.
But congratulations, you have hit on my biggest audio pet peeve! DACs matter very little these days. Anything talking about DACs and not the DAC/Amp stages is marketing BS. Even dirt cheap DAC chips will acoustically transparently convert the digital signal to analog in audio frequencies because it is so basic to do. DACs on their own are useless for audio anyway, what really matters in your audio signal is the amp circuitry after the DAC that applies gain to the signal to useful levels as the choices there do make an acoustic difference if the design is poor.
What makes you think the DAC/Amp in your headphones is going to be better than the one that is built into the SoC of your phone? I don’t think I’ve ever seen any measurements of headphone DAC/Amps.
Petter1@lemm.ee 9 months ago
I learned that from my father, who mostly listen to music from his phone using external headphone amp for his bayer dynamics studio headphones, or uses digital out (via Bluetooth) and let his other Bayern dynamics active headphones do the DAC. He is sure that he hear the difference, but of course that could all be in his head alone. I myself am not a hiFi enthusiast, I only find the tech behind it very interesting. (I listen to music using airPods and in my car using CarPlay, sorry iPhone user here, but thinking to migrate as soon as my iPhone X becomes unusable) But given my interest in tech, I appreciate the explanation, that cheap DAC chips are very good as well, these days.