Walmart does tube amp for Ipod - lol.
http://www.walmart.com/ip/DICE-Electronics-iTPA-220-Tube-Amplifier-System-for-iPod/13350437?wmlspartner=isIkAyUyNbM&sourceid=36728111012513742921
http://www.walmart.com/ip/DICE-Electronics-iTPA-220-Tube-Amplifier-System-for-iPod/13350437?wmlspartner=isIkAyUyNbM&sourceid=36728111012513742921