For those in agreement with Larry about the superiority of a high level connection for a sub, know that Rythmik provides both line level connection (on RCA jacks) AND high level (on binding posts) on the company's PEQ and PEQ3 plate amps.
Rythmik drops the high level/binding post connections on it's XLR2 and XLR3 plate amps, in exchange for the XLR connections.
The choice of plate amps is an option on all the upper-tier Rythmik subs.
Everyone seems to know that REL offers high level inputs, but for some reason don't know the same about Rythmik. Why is that? It could be that REL makes that feature a bigger selling point than does Rythmik.