The Acoustic Signature record clamp GRIP-S is a highly innovative design that eliminates record groove noise revealing a new level of musical performance. It is manufactured with our proprietary Silencer technology invented by Acoustic-Signature. The Aluminum body is CNC lathed for perfect alignment and balance. The Silencers used at the GRIP-S are made of Copper and absorb resonances very effective. They are pressed into the metal of the GRIP-S. This record clamp has a total mass of 752 gram and is designed to be used with a wide range of turntable from mid to high mass turntable designs (15 lb platter and higher). For lighter constructions and Sub-Chassis players we suggest to use our regular GRIP. GRIP-S with its metal part manufactured from a high quality heat treated aluminum alloy, and is available in 3 colors: Silver or black anodized or high gloss non anodized. All versions of the GRIP-S deliver the same performance.