I recently purchased a fantastic pair of
Grado Labs SR-80 headphones, which I typically plug into the 1/8" minijack on either my iPod or Quicksilver G4. I've
read recently that although the headphones sound great, they could sound even better if "driven" by a device with more powerful amplification that what is provided by the iPod or Quicksilver headphone jack. Is there a sound card that I could install on my Quicksilver G4 that would provide increased amplification?