NAC battery question

[kf21857 at comcast.net]

Cheap car amplifier (check pawn shops), home stereo speakers and an ipod.   This is basically the setup I have in my Triumph these days.  No CD player to worry about being stolen.
Dave

well the battery IS in my a4.. =)

ive got a quick battery question - if i were to use my car battery to power
a home reciever and speakers for a tailgate event how would i do that and
how long could i expect it to play with say a 60 w.p.c. reciever? how would
that work, would i need some kind of converter?

just looking to get some moderate volume outside. thanks all!
jim