Head unit without built in amp, will it work with mach?

[ScottBW]

Was curious if an aftermarket head unit without an internal amplifier would work with the amps in my mach system? Was looking at maybe getting this unit.

http://www.crutchfield.com/S-DsDhPn81tB4/cgi-bin/prodview.asp?I=500cda7998&search=alpine 7998

 

[IAmTodd]

On the '98+ Mach units, the amp for the door speakers was incorporated into the head unit unlike the early ones. The only amp external to the HU is the sub. So if you wanted to run that one, you'd need an amp.