Hello, this is not so much P9 lite firmware related, but I was wondering if anyone knows how well it can drive headphones of slightly higher impedance than the usual earphones. I'm thinking of buying headphones with 35 ohms impedance (ATH-M40x) but I want to make sure that I won't need an amp to drive them... So I'll appreciate any help if anyone knows.
Well, to answer my own question, in case someone might be interested, it can drive them alright; they do not lack volume, but you might find yourself trying to get them to sound louder if you're listening in a noisy environment, like a bus, as the isolation is not quite like that of an IEM.
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Hello,
I was wondering if anyone knew what the output impedance of the Desire Z is? Or if someone with a voltmeter could maybe test it? The only source i've managed to find online was some other random forum post which cites 64ohms which just seems way to high for a mobile device.
I'm planning on buying a pair of low impedance headphones and am trying to decide if I'll need to buy an amplifier.
Thanks
worldestroyer said:
Hello,
I was wondering if anyone knew what the output impedance of the Desire Z is? Or if someone with a voltmeter could maybe test it? The only source i've managed to find online was some other random forum post which cites 64ohms which just seems way to high for a mobile device.
I'm planning on buying a pair of low impedance headphones and am trying to decide if I'll need to buy an amplifier.
Thanks
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the lower the impedance of your headphones, the less power is needed to drive them
I have a normal multimeter, so I cant get the impedance with accruacy.
In my case I read alot on mp3 players and audio cards in them. on headfi.com forums I found some frequency graphics and the htc desire worth it. Its not a cowon player but its pretty good. way better than a iphone.
So I decided to bought audiotechnica ath-m50 studio closed cans headphones. they are always in the top 10 lists of audiophile forums.
They are 38 ohms impedance headphone, and its pretty impressive on the DZ. I can't barely see any difference on a real amp like yamaha or audioresearch one.
on audiophile forums lot say that youll need a amp, buy with poweramp app its just allright.
Just had a go at measuring the output impedance of my Desire Z.
R Load = 19.9 ohm resistor
V = 171.3mV
V load = 76.7mV
Zo = 24.5 ohms
So output impedance is quite high, ideally use headphones with impedance of 300 ohms or above, low impedance headphones will work but will draw more current and won't sound as manufacturer intended but may well sound fine for day to day use.
My Sony broadcast headphones are 32 ohm whereas my Beyer DT100's are 400 ohm so a much better match for the DZ, both play loud, the DT's therefore are more efficient at converting input power into sound pressure.
measured again with 180 ohm load
Zo = 24.9 ohms
Hi, has anybody listened to the v20 on 600 ohm headphones?. Is the phone able to drive such high impedance headphones properly, is the volume Loud and clear? Thank you
If it isn't able to, try Hi-Fi Quad DAC
You need to know the sensitivity of the headphones, not just the impedance to really know for sure if they will get to a listenable volume. Without knowing more it's impossible to say. It's definitely not putting out enough power to get any 600 ohm headphone to it's full potential, even if volume is decent
so i like the phone and i don't want to return it just cuz of that , so i decided to buy better earbud , what are my options? ear buds that lies deep inside ear and not HeadPhones that goes around it .. i want to know the best suggestions that prices aren't that high and have no hissing .. thanks in advance .
I'm currently using Faaeal Narcissus and I don't hear any hissing sounds. It costs $27 at Aliexpress, but if you want something cheaper, I suggest you try the 64 ohm variants which you can get for as low as $8. I assume that these 64 ohm ones would have very minimal to no hissing.
LALS96 said:
I'm currently using Faaeal Narcissus and I don't hear any hissing sounds. It costs $27 at Aliexpress, but if you want something cheaper, I suggest you try the 64 ohm variants which you can get for as low as $8. I assume that these 64 ohm ones would have very minimal to no hissing.
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thanks for your suggestions , do you have some link for them?
NVM5282 said:
thanks for your suggestions , do you have some link for them?
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Here's Faaeal's official store at AliExpress aliexpress.com/store/2178200?spm=2114.search0104.3.14.LPdCMB
My last year's Xiaomi Piston II's don't have any hiss. But neither do the cheap ones in the box of my old P9 lite...
Both were like reborn plugged in to the Mi A1, great sound for the price!
Xiaomi Hybrid Mi In-Ear Pro HD, no hiss at all.
I think any over the ear headphone with impedance greater than 32 ohm will have any issue
On another threat it said that even Apple Ear Pods (45 ohms) experience some hissing. Apparently the higher the better, it should support up to 600 ohms.
Consider that another headset might have inferior sound quality, depending on how good your current cans are (and some very good headphones have some very low impedance). So even if you get rid of the hissing, you might pay a price in overall quality.
invertedchicken said:
On another threat it said that even Apple Ear Pods (45 ohms) experience some hissing. Apparently the higher the better, it should support up to 600 ohms.
Consider that another headset might have inferior sound quality, depending on how good your current cans are (and some very good headphones have some very low impedance). So even if you get rid of the hissing, you might pay a price in overall quality.
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Apple ear pods connect via Bluetooth. Not via 3.5mm jack.
alkesh95 said:
Apple ear pods connect via Bluetooth. Not via 3.5mm jack.
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Nope, that would be Apple AirPods
The Ear Pods are just their fancy name for the cheap regular headphones you get with any iPhone.
Hello guys! I am thinkng about buying this phone and i can't find any clear info about audio jack output in this phone. Is it any good? I heard about hissing sound but i think i will get rid of it with higher impedance headphones. What i care is sound quality. What can you say about it? What opinion you have? Also, can you tell me if this phone plays 32 bit or 24 bit audio? Or only 16? I was thinking about buying standalone dac but i dont know one thing. Does phone amplifier works on usb audio? I hope you can understand me. Sorry for all mistakes. I am still learning english
I'm kinda stumped. I know most phones have tinny, crappy sound out of the box no matter how good the headphones are. The 9T is not different in that regard. Since I won't live with that, I still root just to install V4A (it's a scandal this tech hasn't been bought up and is being put into phones by default).
Now, with V4A installed and working the 9T gives off fuller sound but it sounds terribly processed on the verge to distorted. As if the CPU struggled somehow to keep it up. Which is, of course, not possible because V4A has worked flawlessly since the times of yore and Kitkat.
I know for a fact my Jabra 65T can do better, very much better. The buds shouldn't be the problem. I have yet to try with wired ones but I'll need to find my good pair.
Additionally, the BT connection doesn't have a problem with a wall at my home but becomes unstable when I carry it on the left side of my body (the BT receiver being in the right bud). I'm not a fat cyborg full of metal parts.
What gives? Any ideas?
Not just Bluetooth, even pistons through the jack are very poor. For comparison, I played the same track on BT and Pistons on my 9T and on my wife's OPO6 and hers is significantly better.
dancress said:
I'm kinda stumped. I know most phones have tinny, crappy sound out of the box no matter how good the headphones are. The 9T is not different in that regard. Since I won't live with that, I still root just to install V4A (it's a scandal this tech hasn't been bought up and is being put into phones by default).
Now, with V4A installed and working the 9T gives off fuller sound but it sounds terribly processed on the verge to distorted. As if the CPU struggled somehow to keep it up. Which is, of course, not possible because V4A has worked flawlessly since the times of yore and Kitkat.
I know for a fact my Jabra 65T can do better, very much better. The buds shouldn't be the problem. I have yet to try with wired ones but I'll need to find my good pair.
Additionally, the BT connection doesn't have a problem with a wall at my home but becomes unstable when I carry it on the left side of my body (the BT receiver being in the right bud). I'm not a fat cyborg full of metal parts.
What gives? Any ideas?
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That's long talk. I'll try to explain it in short. Honestly Xiaomi MI9t performs great sound through earbuds, I just googled your earbuds you are misleaded in information with earbuds and phone relations, your Dynamic drivers are 6mm for Jabra 65T that's poor actually, it depends on kind of music though if you'd listen to Heavy Metal that won't work much because they are too weak. Secondly, electrical resistance for your earbuds is 16 Ohm, what that means? That means higher sound but with more distortion possible depending on dynamic drivers of your headphones which are too small and they cannot handle such a big electricity stream perfectly, also less Ohm reflects on your phone battery devastation. For example my Bluetooth earbuds Huawei AM61 Sports are 32 Ohm in electrical resistance that is optimal it is not recommended more than 32 Ohm for basic use and they include 11mm Dynamic drivers, in conclusion they are x2 cheaper than your earbuds but x2 more powerful, I listen to Heavy Metal with no distortion at all. For the future I'll give you a hint, look for headphones specifications inside but not the price.
hwandroid said:
That's long talk. I'll try to explain it in short. Honestly Xiaomi MI9t performs great sound through earbuds, I just googled your earbuds you are misleaded in information with earbuds and phone relations, your Dynamic drivers are 6mm for Jabra 65T that's poor actually, it depends on kind of music though if you'd listen to Heavy Metal that won't work much because they are too weak. Secondly, electrical resistance for your earbuds is 16 Ohm, what that means? That means higher sound but with more distortion possible depending on dynamic drivers of your headphones which are too small and they cannot handle such a big electricity stream perfectly, also less Ohm reflects on your phone battery devastation. For example my Bluetooth earbuds Huawei AM61 Sports are 32 Ohm in electrical resistance that is optimal it is not recommended more than 32 Ohm for basic use and they include 11mm Dynamic drivers, in conclusion they are x2 cheaper than your earbuds but x2 more powerful, I listen to Heavy Metal with no distortion at all. For the future I'll give you a hint, look for headphones specifications inside but not the price.
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You might be onto something. I do listen to Metal mostly, but I have tried Minimal Techno etc for reference. It sounds much better. Clearer. More defined bass instead of the muddle actual music sounds like (sorry Techno fans )
Anyway, I come from the very midrange Samsung A50. The only completely positive thing I can say about that one is that it sounded quite OK even without V4A. Not sensational but very much into the 'acceptable' field.
Guess it's time for the big can sound-off. I also have very good RHAs with cables (stupid at the gym) and cheap-ish Sony BT ones.
Price is not what defines quality of headphones - for example Dr. Dre - specification and physics are what you should look after.
Well did some further testing with my other headphones and another phone.
Cheap Sony BT cans? Cool, very bassy which I like.
Wired RHA super cans? Very cool, audio bliss.
Jabra Elite 65T? Crap no matter what I do
Different phone, older Samsung whatthehellever:
RHA cool, Jabra cool, Sony cool -> all as far as their individual quality goes of course, so the RHAs win easily here too. BUT the Jabras produce good sound, something I know they can do because it worked with every other phone I ever connected them to.
It's obviously a problem between the Xiaomi and the Jabras. And here I thought BT is a mature standard
In case anyone is interested: the solution is to activate the AAC codec in BT/Jabra 65T. How the hell is this not active by default?! Why would you, as a phone maker, default to the worst possible way to send music to headphones?
dancress said:
In case anyone is interested: the solution is to activate the AAC codec in BT/Jabra 65T. How the hell is this not active by default?! Why would you, as a phone maker, default to the worst possible way to send music to headphones?
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That is because not all headphones support AAC for more details you may check this article https://www.soundguys.com/the-ultimate-guide-to-bluetooth-headphones-aac-20296/
By the way you can check compatibility for your device headphones and codecs here https://bluetoothcheck.com/compatibility/xiaomi-mi-9t