The S 950 can hold up to 99 samples unlike the S 900, which can only hold up to 32.
It offers sampling rates up to 48 kHz, but only with a digital input installed, as to be found on the IB 105 interface.
With a digital input, you can record from a CD or DAT drive either only the left channel, or only the right channel, or both channels into a mono mix.
While recording digitally, the audio level is also able to be boosted by up to 12 dB.
The 950 also offers time-stretching and is able to load data from a disk while it is playing a program.
Both samplers are expandable to use SCSI and DMA drives, but they need different interface boards for these jobs.
(S 900: IB 101A offers DMA, IB 101S offers SCSI;
S 950: IB 105 offers DMA, coaxial and optical digital input, IB 109 offers SCSI)
The boards were also offered from Mutec under different product numbers.