Aftermarket stereo in A4

[jeffw@smoe.org (Jeff Wasilko)]

I've got a fairly extensive stereo installation in my existing
car that I'll be moving over to my A4. Has anyone else yanked out
the stock system?

Currently, I've got an Alpine head unit and CD Changer (which
lives in the glovebox in my Saturn--nice to not have to go to the
trunk to swap magazines), electronic crossover which feeds a
4-channel amp for the front separate speakers and a 2-channel amp
for the 8" subs mounted under the rear deck.

I'm assuming the stock radio is standard DIN sized, right?

Thanks in advance for any hints/tips...

Jeff