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AMP annoying noises when charging through USB

post #1 of 14
Thread Starter 
I've got the simple FiiO E5 headphone AMP. I like it, wish I had a better one but I don't have the money for that, atm.
When it's powered on by the battery it works fine, but I found out that when it's connected to the PC through the USB charger I can hear annoying noises (when it should be all silent) whenever I move my mouse or the computer is "thinking" hard

Any ideas on how to solve this?
I have tried most of the USB ports, same thing happens when connected to any of them.



Btw, sound setup is: On board sound from P55FTW, FiiO E5, shure SRH750DJ
post #2 of 14
Like a screeching noise? Is it coming from the amp, or the computer? Could be a capaciter. They tend to do that.
    
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post #3 of 14
Thread Starter 
I find it hard to describe, but it's a computer sound, like those old HDD would make. Maybe you could call it a screaming noise

The sound is related to the USB connection, because when the amp is on it's own battery the sounds are simply not there
Edited by EduFurtado - 5/4/11 at 10:19pm
post #4 of 14
I have that problem as well so I don't listen while I'm charging. Then again, I only use mine with a Zune HD.

Sent from my Samsung Epic 4G
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post #5 of 14
It's more than likely EMI. I bet if you got a shielded and ferrite core USB cable the noise would be diminished.
    
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post #6 of 14
It's really just the fact that USB is extremely noisy.
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post #7 of 14
Thread Starter 
Wierd thing is that I just tested it without any connection to music device or to the sound board (just USB) and the noises weren't there... So, does this means that I could only solve this with a decent sound card?
post #8 of 14
You ought to be using a sound card in the first place.

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post #9 of 14
Thread Starter 
That also means taking 200 bucks out of my pocket, right?
post #10 of 14
Quote:
Originally Posted by EduFurtado View Post
That also means taking 200 bucks out of my pocket, right?
Not really but it does depend on prices in your country.
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CPUMotherboardGraphicsRAM
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CoolingOSMonitorMonitor
Noctua NH-D14 Windows 7 Ultimate 64-bit Dell Ultrasharp U2410 Asus ProArt PA248Q 
KeyboardPowerCaseMouse
Rosewill RK-9000BR PCP&P Silencer MKIII 600W Lian Li PC-A05NB Logitech G500 
Mouse PadAudioAudioAudio
Rocketfish Dual Sided Asus Xonar Essence STX Infinity Primus P153 | Dayton DTA-120 Amplifier... Shure SRH840 
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