Wadia 170i is the natural starting point if iPod is to be your source. The next link in the chain needs to be a DAC and there is a very big range of options in this regard. If you prefer a non-oversampling (NOS) DAC, you could look at options like Mhdt (Paradisea or Havana) or Audio Note (2nd hand DAC 1 or 2). For upsampling models, there are even more options - I second the recommendation for the DACMagic from Cambridge as a great budget option. Also check the Benchmark and Bryston DACs.
Finally a decent integrated amp such as from Musical Fidelity (A300, A5, etc), Cambridge Audio or NAD for example. If you would like to include tubes in the amp, have a look at Prima Luna, Rogue or Cayin for good value.
An alternative option would be to pick up the Musical Fidelity A5.5 integrated amplifier which has an internal USB DAC and run your computer music software stright to the USB DAC.
Finally a decent integrated amp such as from Musical Fidelity (A300, A5, etc), Cambridge Audio or NAD for example. If you would like to include tubes in the amp, have a look at Prima Luna, Rogue or Cayin for good value.
An alternative option would be to pick up the Musical Fidelity A5.5 integrated amplifier which has an internal USB DAC and run your computer music software stright to the USB DAC.