Trying to upgrade this sound system is terrible.

[SpartanCaptain]

Sounds like it works exactly as advertised.... "Preamp" for a little boost.

It isn't as advertised. Since it is advertised as an amplifier. not a preamp.

Sponsored

 

[grwil67]

How many are old enough to remember the "mind blower" speakers? (70s and early 80s)

Speakers had its own Amplifier that required 12 volts @ each speaker.
Then you could simply add what you wanted @ each speaker!

THIS would work!