Three layer construction of the main body to give sound deading qualities. Machined Acrylic platter is designed for use of the threaded acrylic clamp and is intended to act as a sink for unwanted vibrational energy. Silicon fluid and teflon thrust pads are used in the turntable bearing and the tonearm is suspended into low viscosity silicon fluid again to reduce vibration. Due to the silicon fluid, this turntable is pickup only. The Dynavector 10X4 is NOT part of the purchase price as this will be removed from the turntable and retained by me. Spare rubber belt, instructions and arm protractor are included. Excellant links to view are, http://www.stereophile.com/artdudleylistening/1106listening http://www.welltemperedlab.com/ http://www.soundstage.com/vinyl/vinyl071998.htm