The AT666 Very successful system of bonding record and platter, flattens records with a 250 kg pressure.
The platter is a 30cm slab which weighs 1,4kg, thus adding 1,4kg to the record for an even higher dynamic mass and improved rotational accuracy - not for wimpy motors. Overall thickness is 9,5mm ; the AT666 can be installed on turntables with a spindle at least 11mm high.
The AT666 was available in two versions : the one shown here is the original, manual, disc stabilizer : manual puming required.
The slightly later version swapped the manual suction unit with the automatic and battery-powered AT666 which offered the immense advantage to reduce the owner's manual from 8 pages to 2.
The AT666 allows the sensible MC cartridges (and MM) to follow the groove completely unaffected by warps.
A rebadged AT666 was by the way made available by Nakamichi for the TX-1000 under the VS-100 moniker