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Author By changing earphones will it help? p990i
icaka
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Posted: 2007-11-05 14:37
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On 2007-11-05 12:24:32, sanjeevjaya wrote:
Well, you could always take a voltmeter to check the impedance on the stock earphones. I'm not sure what the impedance is, but if its rather high, then there is only two ways to go about it, get a lower impedance headphone or get and mini headphone amp(like those 3 i suggested above).

Do note though, that I'm speaking about the volume level here, not sound quality. That's a whole different beast.



Hmm...voltmeter is for voltage.Ohmmeter is for impedance.SE headphones hae low impedance - between 14 and 40 Ohms,most of them - 18-32 Ohms(which isn't that different in the real world).

Changing the impedance may have impact not only on volume,but on quality,too.Higher impedance headphones = lower volume,better quality.If you want BOTH high volume and best quality,go for a portable amp.It has high impedance input,which "unloads" the heavy load of the internal phone amplifier(caused by the low impedance headphones),and very low impedance output,which is much more powerful(this will make high-volume listening with very low distortion and dynamic parameters,and will enhance bass considerably)."Unloading" the heavy load of the internal phone amplifier makes the audio quality much better.As I said,very high impedance = very good quality.(for the amplifier part,I mean.On the headphone output of the additional amplifier lower impedance is better)

So,two of the best portable amps are the Headroom Airhead and Bithead(Bithead has internal DAC so you can plug it in your PC USB and by-pass the low quality soundcard amplifier with much jitter which comes from the fans inside your PC case - RF interference and etc,you know)
It has powerful output and is very good at driving low and high impedance headphones.It is very portable,too.The above mentioned amps are bulkier IMO.

And for headphones - if you want the best over-the-year ones(the best choice for the street,as they don't block external noise,but are powerful and listening to them loud will block it,while keeping you out of trouble - you will hear if something important goes around you.)So they are called Sennheiser PX100(35-50$) and are absolute best in their class.I've had many of them,as I tend to overpower and brake them quite often. But they are powerful enough and solid enough - they have steel over-the-head frame and etc.

If you're looking for IEMs(in-ear monitors) you'll get the best sound/price ratio from Sennheiser CX300,Shure E2,Westone UM1,Ultimate Ears all models(they are really higher-class,but more pricey too).I have only one of these IEMs - UE triple.fi 10 plugs,which are awesome,but kinda expensive.

My favourite portable headphones are still Sennheiser PX100.
The reasonable man adapts himself to the world;the unreasonable one persists in trying to adapt the world to himself.Therefore all progress depends on the unreasonable man.-George Bernard Shaw
wrecked_porsche
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Posted: 2007-11-05 15:41
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On 2007-11-05 14:37:34, icaka wrote:

Hmm...voltmeter is for voltage.Ohmmeter is for impedance.SE headphones hae low impedance - between 14 and 40 Ohms,most of them - 18-32 Ohms(which isn't that different in the real world).

Changing the impedance may have impact not only on volume,but on quality,too.Higher impedance headphones = lower volume,better quality.



Aha.. icaka, a fellow audiophile. Are you on Head-Fi by any chance?
My bad about the voltmeter. I should have said multimeter. I'm just too used to the fact that most voltmeters can measure Ohms too.

High impedance does not necessarily mean better sound quality right? I think its a misconception. Look at Audio Technica and Grado, their headphones are really good and have quite low impedance.
Unless we're talking about 600 ohm Beyer cans of course... But that is waaay out of scope here.

Well, the sens are not bad, but give the KSC75 and Philips SHE9500/9501 a look too. They're not bad.

And the Headsix amp is not tiny enough? Granted the RSA is quite big, but dude, the xin supermicro and meier headsix are really small !

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[ This Message was edited by: sanjeevjaya on 2007-11-05 14:49 ]
icaka
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Posted: 2007-11-05 15:55
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On 2007-11-05 15:41:03, sanjeevjaya wrote
Are you on Head-Fi by any chance?

Yes,I visit it often.

On 2007-11-05 15:41:03, sanjeevjaya wrote
High impedance does not necessarily mean better sound quality. Its a misconception.

Yes,its not = better sound quality.You didn't quite understood my point.I'm not talking about headphones here.High-impedance load "unloads" the phone amp(which is quite bad in fact) and it distorts much less.


On 2007-11-05 15:41:03, sanjeevjaya wrote
And the Headsix amp is not tiny enough? Granted the RSA is quite big, but dude, the xin supermicro and meier headsix are really small !


Hmm,I'm saying that they're kinda bulky,due to the thickness.It isn't comfortable to put such a thing in your pocket as it is 22mm+ thick.Airhead/Bithead are thinner and have rounded edges(which is more important if you ask me).Xin Supermicro is a good device,but it is powered by just one battery.That will drain pretty fast
Also,the Xin isn't as bassy as the Airhead/Bithead is and hasn't all the bells and whstles,including two-pair headphone out,USB in(for the Bithead model only) and etc.

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[ This Message was edited by: icaka on 2007-11-05 15:00 ]
wrecked_porsche
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Posted: 2007-11-05 16:12
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On 2007-11-05 15:55:33, icaka wrote:
Yes,I visit it often.






On 2007-11-05 15:55:33, icaka wrote:
Yes,its not = better sound quality.You didn't quite understood my point.I'm not talking about headphones here.High-impedance load "unloads" the phone amp(which is quite bad in fact) and it distorts much less.


Oh, I though you were talking about the headphone specific impedance.


On 2007-11-05 15:55:33, icaka wrote:
Also,the Xin isn't as bassy as the Airhead/Bithead is and hasn't all the bells and whstles,including two-pair headphone out,USB in(for the Bithead model only) and etc.


Well, we must not let the audiophile in us take over when we are answering here. Hehehe... J/K
I think the OP of this thread won't need all that functions. His main gripe is the volume is too soft. Unlike us, I don't think he would need the USB DAC function and two headphone out, etc.

Cheers.
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anyer
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Posted: 2007-11-07 10:47
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Definitely the problem of the earphone that cause the lwo volume.


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[ This Message was edited by: anyer on 2007-11-07 09:49 ]
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