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post #91 of 98

Can someone help figuring this out:

 

Gmsarena in this Oneplus One review http://www.gsmarena.com/oneplus_one-review-1101p7.php says the audio quality is great with an amplifier but bad with headphones.

 

So, imagine if a plug a Cayin C5 amp to Oneplus One, the sounds become great? If i plug just a VSD3S to Oneplus One the sound become bad?

 

Is this it? What's the difference in the graph with headphones and without headphones?

 

"

Solid audio output

With the OnePlus One we were somewhat worried that audio quality might be one of the corners the company has cut to achieve its lower-than-expected price tag. The first part of our test (the one where the phone is connected to an active external amplifier strongly suggest otherwise, though.

The smartphone impressed us with very high volume levels and excellent readings in every part of the test.

It's not all roses though - plugging in a pair of headphones caused quite a lot of degradation. Its volume levels plummeted to only average levels, the frequency response started missing the mark now and then, while the IMD and the stereo crosstalk increased too. It's a decent performance here, particularly given the market segment, but not quite the audiophile experience that the first part of the test was.

"

 

 

 

Is this it, plug an amp and it all become roses?

post #92 of 98
I heard that the Xperia Z3 can read DSD out of the box !? Did anyone tried it, is it native DSD playback and how it sounds?
post #93 of 98
Thread Starter 
A small question regarding Iphone 4: if I'll jailbreak it, will it affect the sound quality or will the sound signature be in any way different?
And, should I update the IOS to the latest 7.x.x prior to jailbreaking?
(I assume that updating the IOS won't affect the sound / signature?)
post #94 of 98
post #95 of 98
Quote:
Originally Posted by rosw View Post
 

Hi all,

 

Saw this article and decided to dig further and find out more about Audio for Smartphone

 

http://www.phonearena.com/news/Phones-for-audiophiles-5-Android-handsets-with-quality-sound-processors_id63856

Warning: Spoiler! (Click to show)

I would like to find out what are the factors or what determines one smartphone is better than the other in terms of audio?

 

ie audio codec? aptX ? processor?

 

Cheers!

 

ps; this is my very first post in this forumn and I would like to find out more which phone is good for audio / what additional devices that i can do to enhance the audio features / functions for my smartphone. (using primarily internet radio, SKY.FM / Pandora & some MP3). I would greatly appreciate if anyone can advice me / point me to the correct sub-forumn topics

 

 

So basically they test: 

Signal to noise ratio- will it hiss? you don't want hiss!

How loud does it go? -most teens want it loud, good for large headphones, not good for low impedance iems.

Crazy distortions when you plug in headphones? If the line has spikes in it, don't buy it as your daily listening device.

 

Apart from that you want an enjoyable sound, that depends on a whole lot of other factors, go for a well known DAC company like wolfson.

 

As for internet radio etc, it isn't very good quality audio, just look a phone that has a low signal to noise ratio, a smooth line and decide on how much power you need depending on which headphones/iems you are using.

 

Quote:
Originally Posted by mdiogofs View Post
 

Can someone help figuring this out:

 

Gmsarena in this Oneplus One review http://www.gsmarena.com/oneplus_one-review-1101p7.php says the audio quality is great with an amplifier but bad with headphones.

 

So, imagine if a plug a Cayin C5 amp to Oneplus One, the sounds become great? If i plug just a VSD3S to Oneplus One the sound become bad?

Warning: Spoiler! (Click to show)

Is this it? What's the difference in the graph with headphones and without headphones?

 

"

Solid audio output

With the OnePlus One we were somewhat worried that audio quality might be one of the corners the company has cut to achieve its lower-than-expected price tag. The first part of our test (the one where the phone is connected to an active external amplifier strongly suggest otherwise, though.

The smartphone impressed us with very high volume levels and excellent readings in every part of the test.

It's not all roses though - plugging in a pair of headphones caused quite a lot of degradation. Its volume levels plummeted to only average levels, the frequency response started missing the mark now and then, while the IMD and the stereo crosstalk increased too. It's a decent performance here, particularly given the market segment, but not quite the audiophile experience that the first part of the test was.

"

 

 

 

Is this it, plug an amp and it all become roses?

 

 

How good it sounds depends on the DAC, that graph means if you plug in an amp, you don't get much distortion. If you just plug in iems, then you get all those spikes = distortion. This means the headphone out is not well designed and most probably an after thought.

 

Plugging in an amp in the headphone out port is usually a bad idea, it will amplify the hiss too. If you must have an amp, use one with a compatible USB dac for your phone, this cuts out the hiss problem from the headphone out. 

post #96 of 98

Hi Guys,

 

which is more important?

 

onboard sound processor but without aptX

 

Yamaha YSS-205X chip for the karaoke mode, SABRE ES9601 DAC and TI’s OPA1612 amplifier kit. or 

Hi-fi experience with an OPA1612 Super-high Resolution Amplifier, an advanced ES9018K2M DAC

 

or without onboard sound processor but with aptX 

 

for playing audio files / MP3 via Bluetooth headphones ?

post #97 of 98
Why using bluetooth if you want to improve the sound quality? Everybody knows that bluetooth will further compress the sound signal :P
post #98 of 98
Quote:
Originally Posted by rosw View Post
 

Hi Guys,

 

which is more important?

 

onboard sound processor but without aptX

 

Yamaha YSS-205X chip for the karaoke mode, SABRE ES9601 DAC and TI’s OPA1612 amplifier kit. or 

Hi-fi experience with an OPA1612 Super-high Resolution Amplifier, an advanced ES9018K2M DAC

 

or without onboard sound processor but with aptX 

 

for playing audio files / MP3 via Bluetooth headphones ?

 

From experience, a good dac > aptx support, but it is hard to say because there are so many factors, especially because I have no idea what the other phone is and have not heard the Sabre dac.

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