White noise from speakers (and plugged in headphones)

headphonesnoisespeakers

My Logitech Z-2300 speakers have white noise. I have to crank up the volume to 70%+ to hear it, and I never need it above 40%+.
So the speakers in are fine as is. The problem is when I connect my AKG K-370 earphones into the speakers; I hear very audible white noise independent of volume level, and even when the speakers are off.
I tried isolating the cables from others, that's not it. What can I do?
The audio driver I am using is Realtek High Definition Audio ver. 6.0.1.7246.
Here is a picture from device manager:

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Best Answer

Noise Induction

I recently had a similar issue and found that it was low quality audio cables that I was using.

I replaced my 3.5mm audio jack cable for a higher quality branded one.

I also replaced generic RCA extension cable for a high quality Philips branded one.

All noise is now gone (at least to my human ear), at all volumes with all devices. Despite extensive testing I have been unable to induce any noise.

Problem

The cables contain an earth to ground out background noise, similar to static on analog televisions.

Cables also contain shielding to protect from noise induction caused by electromagnetic interface from other electrical devices and cables.

Cheap cables do not often seem capable of properly providing these functions, possibly because the cable isn't properly manufactured to iEEE standards. This is a low cost manufacturing issue.

Solution

Good quality cables made a big difference in ensuring that the noise is filtered out.

Further Information

The less amplified the original signal the less risk there is of amplifying unwanted noise.

If you have a the following setup

Computer -> Amplifier -> Speakers

You should ensure that the volume on the computer is set to 100% then use the amplifier to control the volume. This is the same for most analog audio, it should always be amplified closest to the source.

This does not include digital audio, such as optical and HDMI.