The Sigma SSP has been optimized as a high - performance
stereo preamp / processor with video switching, multichannel processing and bass management included.
Not exact matches
It's also really easy to install even on factory
stereos because it has 2 input levels to choose from:
preamp and speaker - level.
This
stereo comes with a dedicated subwoofer
preamp RCA output.
This
stereo also includes 4 volts of
preamp voltage and a built - in equalizer.