best way to connect rel storm 3 to NAD T765 A/V re


Wondering th best way to connect rel sub - I can connect high level with speakon cable or low level with rca through sub woofer out.

NAD can process and recognized diff signals (so, would treat sub appropriately for surround if through low level and then treat like high level (with steroe source) also if connected through low level rca.

I have heard high level is better for steroe-

main question - with a high quality a/v reciever is there really a benefit from a high level (directly to speaker posts) connection versus low level through rca.

Thabks fopr thoughts.
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