The CS-550 Stereo Chorus was originally commissioned by legendary Japanese Rock guitarist Hisato "Char" Takenaka. After 25 years of playing Char still hadn't found a chorus unit that satisfied his critical tastes, so he approached Maxon to build him one. Char had requested three specific points be addressed when designing this unit first that it should have less noise than a standard chorus; second that it should be extremely versatile; and lastly, that it had to be analog. The results of this experiment were so overwhelmingly positive that Maxon decided to market the unit, and thus the CS-550 Stereo Chorus was born.
CS-550 Stereo Chorus page at Maxon 's website...