Walker does recommend treating LPs with the Talisman prior to each play. We didn't have it long enough to test how fast the effects wear off, but if even the manufacturer says so...
Furutech claims that using their Demag once should last indefinitely. Not having one, we've never tested. I've been too lazy to repeat treat an LP with our doohickey and listen for further improvements. Should we schedule a double-blind demagging party?
Furutech claims that using their Demag once should last indefinitely. Not having one, we've never tested. I've been too lazy to repeat treat an LP with our doohickey and listen for further improvements. Should we schedule a double-blind demagging party?