I think there are two points one can argue about:
1 value for money.
2 sound quality, and the REL preference for high level connection in particular.
As for 1), I think the outcome is obvious, although REL subwoofers are admittedly good looking and that is a legitimate argument
As for 2) I think in the early days of subwoofers the high level connection was an interesting practical way to connect a sub to a stereo amplifier without a line level output and without any high pass filter. From my own experience this is quite easy to implement. The claim that this is also sonically superior is bonkers, of course. The biggest downside is that the main speakers and power amplifier still have to do a lot of the heavy lifting.
1 value for money.
2 sound quality, and the REL preference for high level connection in particular.
As for 1), I think the outcome is obvious, although REL subwoofers are admittedly good looking and that is a legitimate argument
As for 2) I think in the early days of subwoofers the high level connection was an interesting practical way to connect a sub to a stereo amplifier without a line level output and without any high pass filter. From my own experience this is quite easy to implement. The claim that this is also sonically superior is bonkers, of course. The biggest downside is that the main speakers and power amplifier still have to do a lot of the heavy lifting.