I'll have to test them all out independently and see. I'm wondering if a pair of these would do the trick.

ART DTI Dual Transformer/Isolator Audio Interface https://www.amazon.ca/dp/B0009GUOQA/ref=cm_sw_r_cp_apa_i_h9yHCbAZTGR2G

Axiom M5HP VP160 M3 ADA1000
Anthem MRX 720
SVS SB-3000 (dual)