NSP-2100A amplifier chip

 It has two
   channels of auxiliary PWM output and three channels of auxiliary digital audio output. NSP-2100A includes
   essential preprocessor features like full channel mixer, adaptive gain control, de-emphasis, 3D surround,
   5band graphic EQ, general purpose biquad filter blocks, delay line and volume control & dynamic range
   compression. Using external memory, Lip-sync delay compensation can be implemented. NeoFidelity's
   patent filed functional block called SFACS(Sampling Frequency Adaptive Coefficient Scaling) and world-
   unique floating point operation scheme eliminate audio performance degradation problem in the conven-
   tional asynchronous SRC system and are optimized for preserving audio quality.