REL now offers their own upgraded cable called the Bassline which utilizes teflon coated slow-drawn high purity copper and silver solder for the connections.
I haven't tried the Bassline but I do use the SR Tesla REL SPEC Resolution Reference cable on my Strata lll and Stadium lll subs and it is miles ahead of the stock one in terms of extension, clarity and soundstaging.
Another upgrade that took me by surprise was replacing the stock mains fuse with SR20 fuses. It provides more of the same attributes that the cable upgrade provides and alot cheaper! I highly recommend anyone who owns a REL to give the SR20 fuses a shot, you will not be disappointed!!
I haven't tried the Bassline but I do use the SR Tesla REL SPEC Resolution Reference cable on my Strata lll and Stadium lll subs and it is miles ahead of the stock one in terms of extension, clarity and soundstaging.
Another upgrade that took me by surprise was replacing the stock mains fuse with SR20 fuses. It provides more of the same attributes that the cable upgrade provides and alot cheaper! I highly recommend anyone who owns a REL to give the SR20 fuses a shot, you will not be disappointed!!