Really? I noticed practically no difference between my on board. If this does anything it makes my headphones louder. It's good though if you want to bypass your on board though but i feel it is not needed. I use mine because my on board audio is incredibly quiet.

It does great on older PCs/laptops since most older onboard audio chips are really noisy.
The E7, imo, sounds very clear and neutral. The only thing lacking is a volume knob...