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Is there any software which can be used to boost the audio output from the PC. Mostly I want it to work on browser, for eg. to watch videos on youtube with boosted sound.
I am using Windows XP SP3

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Please define 'boost' a bit more precisely. Do you mean louder or more bass or anything else? – Michael K Jul 2 '12 at 9:59
More Volume is the priority, other things like bass are add-ons :) – noob Jul 2 '12 at 10:05
If you've already turned the volume to maximum in Windows and in the Youtube controls, you probably need a physical audio amplifier for your headphones, or for your speakers. – RedGrittyBrick Jul 2 '12 at 10:35
up vote 3 down vote accepted

Check out the program called SX Fidelity Amplifier.

SX Fidelity Amplifier is suitable for everyone who wants enhanced audio from a digital source. Use SX Fidelity Amplifier for:

  • PC applications.
  • Music Services.
  • Streaming Internet Radio.

If not buying, just reinstall after the trying period expired.

Good luck.

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That worked. Do you know any other software, which are opensource or free? – noob Jul 2 '12 at 10:40
Not that I know of. – ahmed Jul 2 '12 at 10:58

Unfortunately, Windows XP is a lot more limited than Vista/7 which can do this out the box quite easily.

You can try to see if your driver software came with any advanced options such as artificial boost or loudness equalization... apart from this, your best bet is to simply turn your speakers up or buy more powerful/louder ones.

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