The Spiral Groove SG 2 Capturing the Essence of the SG 1 The SG 2 utilizes the platter materials, platter bearing, motor and motor controller of the SG 1, to capture its sonic character.  The cost effectiveness of the SG 2 is realized by exchanging the stainless steel parts of the SG 1 with aluminum in the SG 2 and incorporating a simplified body and arm board mount.  Specifications 3 layer aluminum sandwich body Integrated motor isolation mount Isolation feet 33/45 rpm - electronically selected Removable arm board External motor controller Record clamp included