We'd sometimes wondered how Record Restore would compare to the ultrasonic method, where the record is pounded by ultrasonic energy and isopropyl alcohol; and then out of the blue a customer answered our question.
Record Restore is the gentle way of dislodging and removing the most difficult of noise, from those 'speed bump' lumps of crud through to the extremely fine particulate matter that you don't hear, but yet masks the finest detail in the groove wall modulations by effectively filling them in so that the stylus doesn't feel them.
