Roland SRE-555 Chorus Echo

The Roland SRE-555 Chorus Echo is a tape delay & echo unit, which is the rack-mounted version of the Roland RE-501 Chorus Echo. It features the black & orange aesthetic typical of the Roland rack products line during the 1970s. For effects, it also has chorus and reverb.

Andy Summers' Roland SRE-555 Chorus Echo
Andy had used a range of Roland rack-mounted products on the Zenyatta Mondatta tour in 1980-81 and subsequently the Ghost In The Machine tour in 1981-82. This included the SRE-555 Chorus Echo.

Andy had the Echoplex which he preferred for echo & delay effects, so the SRE-555 was likely more for sonic enhancement.

Stewart Copeland's Roland SRE-555
Stewart Copeland formerly used the RE-301 model of the Chorus Echo, with which he famously developed his dub echo drum technique but later replaced with a digital delay. He bought the newer SRE-555 to use at his leisure as an outboard unit at the Worried Rabbit during the early 1980s, feeding his guitar and bass signals through the device.