What you're looking at is the FiiO QX13, a pocket DAC and headphone amp for your phone, laptop, or games console – a gateway ...

I'm not going to say you shouldn't do that, because you totally should, but while you go through the arduous process, you deserve to have better audio coming from your PC, and just $9 will do that.

This letter reports a radio frequency (RF) amplifier based on the four-zone MOSFET integrated with health monitoring sensors. The characteristic of the MOSFET is that it has four zones and each zone ...