Yesterday, I picked up Alpine's new CDA 9855 for my 88 560 SEL. It's an
excellent unit. It'll control (with two optional parts) XM Radio and my
Ipod and will play MP3 and WMA Cd's. And it had three pre-amp outs,
built in EQ and crossover.

I plan to add a 4 channel amp, anything from a Kicker to a JL audio
for the dash and rear deck. And I may add a separate small amp to
run to new 6.5" inch speaker in the current door sub openings. I'll replace
the speakers all the way around.

I'd like to go ahead and have the unit installed now as it might be a
few weeks until I decide and purchase the rest of the system.

With that in mind, is it possible to wire the Alpine in with the current
amps and console fader using the pre-outs? Do the factory Beckers
have pre-amp outs to run to the amps in the rear or are they like the
old 'power booster' amps don't actually use a pre-amp signal. The
alternative is to use HU power directly to the speakers but that would, I assume, eliminate the stock subs.

Thanks,

Bill