If you buy a second amp use jumpers on the speakers upper and mids. Then wire the exiting speaker cable to upper (+) and mid (-).
If you get a REL B3 you connect the speaker leads to the power amp. No need to use Preamp.
My vote is to get a sub if you really want to improve bass.
If you get a REL B3 you connect the speaker leads to the power amp. No need to use Preamp.
My vote is to get a sub if you really want to improve bass.