Still 12-bit sampling and 8-voice polyphony, the S950 is an upgraded S900 increasing the sampling rate to 48kHz and the internal RAM capacity to 2.25MB (unlike the S900 its stock 750KB RAM was upgradable), and adding such functions as cross-fade looping, and pre-trigger recording. The front panel is identical to the S900. However, the disk drive now takes both HD and DD disks. The S950 also adds a time-stretch function, an optional trigger-to-MIDI interface the ME35T, and a 13-pin Voice output plug (the same that is on the S612) for external processing of it's voices.