I don't know how some of the products we sold got in "under the Linn/Naim radar" back then, but the Rock comfortably out-performed the LP12 in the mid to late eighties. I believe our then sales director promoted the ARO tonearm as the way forward for Linnies, but imo it wasn't until the Cirkus came along that arms other than Linn ones could really be used to better advantage,