Cooper and use the rest of the budget to get a Naim I-Supply for the I-Pod. Otherwise you will be exposing the speaker to damage from distortion, especialy if you use the Apple Lossless or the AIFF to encode your music. Those two types of files make the I-Pod hard disk to run continuosly, therefore drain your battery and/or place a great demand on the stock charger.
Regards,
Hector
Regards,
Hector