Boss CE-2 Chorus

The Boss CE-2 Chorus was an effects pedal - the successor to the Boss CE-1 Chorus Ensemble. It was the first compact pedal to be produced by Boss, built with a mono chorus circuit and became popular among many musicians for tour and studio use. Phil Collins and Mike Rutherford were known to use this pedal. David Rhodes had also used this pedal for work with Peter Gabriel on So.

Mike Rutherford's Boss CE-2
Mike Rutherford used a Boss CE-2 on the Mama album - possibly a borrowed one.

In footage from the Mama sessions Hugh Padgham is seen plugging Mike's Steinberger bass into the Boss Chorus and Korg WT-12 Chromatic Tuner during an overdub on "Silver Rainbow". This was most likely inspired by work Hugh did with The Police, where Sting always used a bit of Boss chorus on his bass to thicken the sound.

Phil Collins' Boss CE-2
In a photo from the No Jacket Required tour (taken at a concert in Munich in March 1985), a Boss CE-2 Chorus pedal is seen sitting on top of Phil's Yamaha CP-70. As the Boss chorus does not appear in the No Ticket Required footage (filmed 29 May 1985), it appears to have been replaced by the T.C. Electronic Stereo Chorus Flanger by then.