FiiO New Portable Headphone Amp A1 --Classic & Tiny & Metal
Apr 8, 2016 at 8:09 AM Post #481 of 525
Yep, I'd say we have a knockout winner right here
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Or is the contest REALLY over already?
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Since you are not working for FiiO anymore, Im guessing you sell shoes EXCLUSIVELY now?
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Apr 8, 2016 at 11:15 AM Post #482 of 525
Yep, I'd say we have a knockout winner right here :D Or is the contest REALLY over already? :confused:

Since you are not working for FiiO anymore, Im guessing you sell shoes EXCLUSIVELY now?:D


Eh I stopped selling shoes years ago. It's just a funny line to keep in my sig :p
 
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Apr 8, 2016 at 12:19 PM Post #483 of 525
Eh I stopped selling shoes years ago. It's just a funny line to keep in my sig
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Huh, then what is it?
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  Its also the same thing in the "what I do for a living" section.
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Apr 8, 2016 at 12:51 PM Post #484 of 525
Most of the time I'm doing Chinese-English and English-Chinese technical translation for a patent agent.
 
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May 1, 2016 at 11:04 PM Post #486 of 525
I'm looking at this so I can use my smartphone with better quality IEMs. As my LG G4 has a rubbish amp that has around 24ohms output impedance, but I'm not sure if I understand the technical specs and whether my methodology is right.

http://fiio.net/uploads/ckeditor/pictures/3723/content_A1____-EN_10.jpg

If I buy the amp can I power any IEM that has an impedance of 16 ohms without hearing any hissing? Are there any other important values I have to keep in mind when looking for IEMs e.g. regarding mW output power or are there other determining factors that cause headphone sensitivity?
 
May 4, 2016 at 5:58 AM Post #488 of 525
  I'm looking at this so I can use my smartphone with better quality IEMs. As my LG G4 has a rubbish amp that has around 24ohms output impedance, but I'm not sure if I understand the technical specs and whether my methodology is right.

http://fiio.net/uploads/ckeditor/pictures/3723/content_A1____-EN_10.jpg

If I buy the amp can I power any IEM that has an impedance of 16 ohms without hearing any hissing? Are there any other important values I have to keep in mind when looking for IEMs e.g. regarding mW output power or are there other determining factors that cause headphone sensitivity?

Plath ,
 
 If you connect the amp to the phone's headphone port, the sound will still be processed by the phone's amp module. And as you have mentioned that the amp of your smart phone is not perfect, it's suggested to use a DAC such as the E18. 
 
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May 4, 2016 at 7:05 AM Post #489 of 525
So if I get the amp and use it to connect between a pair of low impedance headphones it may still cause hissing?

Sorry I'm just confused as I read some people recommending to buy an amp to sort out that issue.

Not sure if it was part of your determination but I was wrong about the value I stated for my phone's impedance.
 
May 5, 2016 at 11:27 AM Post #491 of 525
  So the Fiio A1, its a AMP and not a DAC right? 
 
Sorry im new, on this world!
 
Could someone, tell me, the basic diferences about DAC,s and AMP,s?
 
Thank you!

 
Yep, it's just an Amp.
 
 
A DAC translates the digital signal to music (and therefore makes it an analogue signal).
 
An Amp amplifies a signal coming from a DAC.
 
May 6, 2016 at 8:47 AM Post #492 of 525
So if I get the amp and use it to connect between a pair of low impedance headphones it may still cause hissing?

Sorry I'm just confused as I read some people recommending to buy an amp to sort out that issue.

Not sure if it was part of your determination but I was wrong about the value I stated for my phone's impedance.

 Plath, it's actually hard to say if the amp can necessarily sovle the hissing problem, as the sound will still be affected by the amp of your phone if you don't use a DAC. So if possible, you may visit a local store near your location and have a test, which will help you find the answer directly.  
 
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May 6, 2016 at 12:50 PM Post #493 of 525
So if I get the amp and use it to connect between a pair of low impedance headphones it may still cause hissing?

Sorry I'm just confused as I read some people recommending to buy an amp to sort out that issue.

Not sure if it was part of your determination but I was wrong about the value I stated for my phone's impedance.


To minimize hiss using an external amp, what you'd do is set the smartphone's volume to max or near max, and turn down the volume on the A1. Step 1 maximises the signal to noise ratio output by the smartphone while step 2 lowers the volume to normal levels.

But this wouldn't help if you were already listening at near maximum volume on your smartphone.

Connecting a USB DAC instead of an amp removes the dependency on the smartphone's output. In that case you need to find a DAC that does not hiss with sensitive earphones and does not buzz when sat next to a smartphone.
 
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