Zapco ASP-OEB Mono Amplifier that factory head unit will

that factory head unit will still pull out the bass frequencies when you turn up the volume

precision machining of parts and huge magnets

the exact opposite is true

You also have the option of balanced or unbalanced inputs

In the 8000 series every detail was taken care of with the utmost care

Zapco ASP-OEB Mono Amplifier that factory head unit willFor many years people have been using passive LOCs to adapt speaker level signals to RCA signals so they can add amplifiers to their systems. The results have been less than satisfactory. In fact many (if not most) folks out there have come to accept the fact that the factory stereo signals are just not good enough to be adapted into a top quality sound system. But they are wrong! Passive LOCs: There is nothing wrong with the factory stereo signal.