This is truly an Old School System done right.
I suggest looking into four improvements for your classic system get better digital sourced audio injected into your classic amp.
1) Look for a Wadia w/ digital inputs and GNSC mods 2) Ripping to FLAC using dbPowerAmp software. It will down convert to any other format for your iPod, including AAC 320 which is as low as I suggest you go. 3) A Squeezebox 3 (with an after market linear power supply) to improve on the audio quality and interface to your PC-based music. 4) Using a Stereovox HDVX digital interconnect from the Squeezebox 3 to the Wadia.
I am either predjudiced or experienced as I have done all of the above, and just trading up from one Wadia w/ digital inputs and GNSC Ref Mods to another.
I find the transparency, pace, rythmn, attack and air of a Wadia direcly feeding amps to be stunning, especially w/ Gallow speakers. I am also using Gallo Ref 3s on Bright Star IsoRock GR3 stands and the Gallo SA3 subwoofer amp.
I look forward to seeing how your system continues to evolve.
/Daniel