Harmonic Resolution Systems (HRS) Analog Disk Light Black (ADL-B) Audiophile Record Weight...NICE For sale is the well made machined record weight (ADL-B) from HRS (Harmonic Resolution Systems) These go for $285.00 new. One can argue if it is worth that price. What I do know is that it is certainly worth 1/2 that amount for this little used piece of audio gear that shows little to no signs of wear. I also know that the cheap aluminum record weights or screw on clamps for $17.00 to $40.00 do little to reduce surface noise or improve record playback performance. What HRS says about this product:This innovative design eliminates record groove noise giving you an unexpected new level of sound quality. The ADH is made from a special HRS polymer and a billet-machined metallic part bonded together using a precision transfer mold with less than one-thousandth of an inch tolerance. The Analog Disk Light (ADL), with a 315 gram mass, is designed to be used with a very wide range of turntable designs including low mass and suspension turntable designs. The Analog Disk Light, with its primary metal part manufactured from a high quality heat treated aluminum alloy, is available in Black (ADL-B) or silver (ADL-S.) Weight & size optimized to properly couple record to turntable platter.Scalloped geometry provides secure record changesPrecise individually finished and measured fit with spindle diameter to maximize the performance of designProprietary polymer decouples record weight from the spindlePrecision transfer molding process for precise balance and alignmentIt worked for me...so if this is your thing, then it deserves a good home and many hours of continued use.