Roland RS-202

The Roland RS-202 is a polyphonic string/brass synthesizer issued by Roland in 1976. It was known for its ensemble effect on strings.

Tony Banks' Roland RS-202
Tony Banks was known for using the Roland RS-202 a lot for string sounds on the Wind And Wuthering (1976) and ...And Then There Were Three (1978) albums. On "Many Too Many", for example, the string sounds are that of the Roland combined with a Mellotron M400. He also blended the strings with a variety of Roland sounds - including the brass sounds - all mixed in the background to add an orchestral feel to the song.

The RS-202 was later replaced with the VP-330 Vocoder Plus which had very similar string sounds to the RS-202.

Phil Collins' Roland RS-202
Phil Collins appears to have once owned a Roland RS-202 string synthesizer, as shown in photos of his home studio taken in March 1980. It is seen sitting on top of Phil's Collard & Collard 6' grand piano. He used it on some 8-track demos from this period, including the one of "Please Don't Ask" (later chosen for Duke) which broadcast on Capitol Radio in February 1981.

In the March 1980 photos, there isn't a VP-330 Vocoder Plus yet, which would be opposite Phil's Fender Rhodes in later pictures... In other words, it probably replaced the RS-202 as the VP-330 had similar string sounds.

Source

 * Various photos including this one