Sound Designer II (SDII) is an application that provides mono/stereo recording, editng and DSP. It requires an SAII, SAII/2, AMII, AMIII, 442, PT Project, or Disk I/O card (with appropriate peripheral).xx/xx/89 version 1.101/31/91 version 2.0210/03/91 version 2.1 (ships with DSI 1.1)03/10/92 version 2.2 (ships with DSI 1.2)07/30/92 version 2.3 (ships with DSI 2.1)10/27/92 version 2.4 (ships with DSI 2.3)11/19/92 version 2.5 (ships with DSI 2.3)08/26/93 version 2.6 (ships with DSI 2.4)05/30/94 version 2.7 (ships with DSI 2.6)06/27/94 version 2.71PT (ships with DSI 2.6)08/16/94 version 2.72PT (ships with DSI 2.6)11/28/94 version 2.8 (ships with DSI 2.81)03/07/96 version 2.81 (ships with DSI 2.81)08/08/96 version 2.82 (ships with DSI 3.01)01/27/98 version 2.8.3 (adds OS 8.x support)