"....I'm looking at the REL T5i (and T Zero) because I think their high level input is the best way for me to connect the sub to an amp."
simna,
The High Level (Speaker) input is REL's preferred way of connecting their subwoofers and is the route I went with my T/5i. As recommended by REL, the T/5i is located in the corner behind the main speakers (KEF LS50s) and I'm very pleased with the results.
FWIW, I briefly considered using two T/Zeros for better balance but I knew that I would not be happy with the limited bass output. Besides, I can always add a second T/5i later on if I feel the need.
simna,
The High Level (Speaker) input is REL's preferred way of connecting their subwoofers and is the route I went with my T/5i. As recommended by REL, the T/5i is located in the corner behind the main speakers (KEF LS50s) and I'm very pleased with the results.
FWIW, I briefly considered using two T/Zeros for better balance but I knew that I would not be happy with the limited bass output. Besides, I can always add a second T/5i later on if I feel the need.