Brochure for the Audio-Technica AT666 disc stabilizer. A suction-type record clamp with a manual pump: the 1.4 kg plate locks onto the record via vacuum, with 250 kg/m2 of suction force across the record surface. This tightens the record-to-platter contact, reduces wow and flutter, and widens the howling margin. Price in 1983: ¥37,000.