Hey folks

I am interested in using an aftermarket (Zapco, PPI, etc) D/A converter in
my system. The headunit is a STOCK 2000 Saab (Clarion?) unit.

I know the Zapco DAIISL has "analog inputs", but arent the analog outputs
from ANY headunit already processed by the internal D/A converter? That
would be D to A to D to A.... sounds pointless. And even if the headunit
were modified for digital out (which i'm sure is possible), where would the
analog output (tuner, XM radio, etc) connect?

If the headunit were modified for digital output, am I also correct to
assume that the signal would be extracted from the headunit before it enters
the preamp section? If so, I would not be able to use the volume, bass or
treble controls, requiring a separate preamplifier.

Any input on the situation would be greatly appreciated, whether it refers
to the Zapco, PPI, old Soundstream/Krell, or other high end D/A units.


Dave

Hey folks

I am interested in using an aftermarket (Zapco, PPI, etc) D/A converter in
my system. The headunit is a STOCK 2000 Saab (Clarion?) unit.

I know the Zapco DAIISL has "analog inputs", but arent the analog outputs
from ANY headunit already processed by the internal D/A converter? That
would be D to A to D to A.... sounds pointless.

D to A - A to D - D to A

And even if the headunit
were modified for digital out (which i'm sure is possible), where would
the
analog output (tuner, XM radio, etc) connect?

A to D - D to A (or in the case of some stock heads: A to D - D to A -A
to D - D to A).


If the headunit were modified for digital output, am I also correct to
assume that the signal would be extracted from the headunit before it
enters
the preamp section? If so, I would not be able to use the volume, bass or
treble controls, requiring a separate preamplifier.

Any input on the situation would be greatly appreciated, whether it refers
to the Zapco, PPI, old Soundstream/Krell, or other high end D/A units.

I think you've just illustrated to yourself the pointlessness of external
DACs. Yes, I fully expect to be criticized by all former owners of the
magical Nak DAC for making that statement.