Lyra SPT Stylus Performance TreatmentThe Lyra SPT stylus cleaner treatment's primary function is straightforward: By helping to keep your cartridge's stylus scrupulously clean, it assists tracking and minimizes damage to your records and cartridge. Lyra has employed extensive listening tests during the development process of Lyra SPT. Not only will it work well with Lyra's own models, but you will find it offers a significant sonic boost to other high performance cartridge designs, too.