It sounded pretty good in its day, better than the AR table that was basically the model design used by Linn, But the design was dated back into the mid-1960's. The Linn arms were manufactured by Jelco and OK, but Jelco had better models for much less. Not sure who manufactured Linn cartridges, but they were never competitive with like-priced offerings from other cartridge manufacturers.
When VPI came along, it quickly dispatched a lot of Linn LP-12 tables to the for sale listings. VPI and other table manufacturers moved the state of the art forward. Linn stagnated.
Those hanging on to their Linn tables do so for sentimental reasons, not for performance.