Sorane Sliding Base Type SMESorane Sliding Base Type SME (Silver) This SME Sorane base is machined from a solid block of aluminum using a CNC numerical control machine, and is equipped with several marks for quick adjustment of your turntable in the event of a change of tonearm. Furthermore, and in order not to damage the barrel of the arm sliding into the SME base, the tightening screws have had their tips covered with a polyurethane pad.