The NJM2186 is a stereo Dolby S-type noise reduction processor. It applies to stereo system on 1 chip because it includes dual channel circuit. The NJM2186 contains all of necessary block for decoding operation, and it also performs encoding operation by connecting two external operational amplifiers. +The feature of minimum operating voltage from 7.5V(V /V = 3.75V)is most suitable for car audio applications. (NOTE) Dolby and double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. San Francisco, CA94103-4813. USA. This device is available only to licensees of Dolby Lab. Licensing and application information may be obtained from Dolby Lab.