My current setup uses Hi-res 24bit music from iTunes/Bitperfect on my MacBook Pro. The music is fed via toslink to my Audioengine D1 DAC/Amp to either my TMA-1 Studio or Creative Aurvana In-Ear 3. I'm very pleased with this low budget setup.
I recently bought a FiiO E07K with the intent of using it as a USB DAC/Amp for my iPhone 4s (Onkyo HF Player outputting Hi-res 24bit music data to the E07K)
I'm thinking that I might dump my Audioengine D1 in favor of the simplicity of just using one DAC/Amp solution for both my laptop and iPhone listening. Do you think I will regret doing this? From an audiophile perspective of course!