I just like to ask if anyone tried this before. Hooking up line out from sound card to pimeta and from the pimeta to the computer speakers(it has it's own amp already), like logitech z-2200. I thought this might improve the sound coming from the speakers. In the other hand, i heard that it could potentially cause damage to the pimeta amp. Btw, I do use my amp with headphones. Any thoughts? Thanks.

The Pimeta will not "amplify" the speakers, since they have their own amplifier inside.

Just the same, the Pimeta will not improve the signal at all, becase it is meant to amplify the signal (increase the gain) while providing as much transparency as possible to the input.

You will not get improved detail or clarity, because that is a factor of the amp in the speakers. In fact, on poor quality systems, or systems which use digital amps, inserting the pimeta into the signal chain will overdrive the speakers internal amp and cause distortion/clipping.

thanks for the head up.

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Hey JeffL, just trying to clarify for learning purposes... could you please elaborate on that statement a little bit so I can learn about why that is so? I had always thought that amps increase the gain only, but from asking others and reading, it appears that amps alter the characteristic of the sound as well. How does everything fit together?

Amp will amplify the signal and can only distort the signal (ie. worsening it).

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Yes, the amp does increase the gain. However distortion is also an inherent problem, as well as differeing resolution, different methods of amplification, etc.

The goal is (usually) distortion free amplification. Sometimes distortion is watned, as in tube amps, or guitar amps, effect inserts, etc.

The sound of the amp is dependent mostly on how the amp can handle all 10 octaves in the 20hz-20khz range, since the gain and distortion varies based on frequency.

All in all, the reasons get very technical, and I definetly couldn't give you an exact reason.

In any case, best bet, keep the signal chain as minimal as possible, and make sure to keep impedances matched, line level stage gains matched, etc.