原文如是说:pt2314 ** a four-channel input digital audio processor utilizing cmos technology.volume, bass, treble and balance are incorporated into a single chip. loudnessfunction and selectable input gain are also provided to build a highly effective electronicaudio processor h**ing the highest performance and reliability with the least externalcomponents. all functions are programmable using the i2c bus. the pin assignments and application circuit are optimized for easy pcb layout and cost s**ing advantage foraudio application。我理解是四个可切换的双声道输入。i2c接口、可以由微**控制放大增益、高低音比例。总之是一个可控高保真前级,估计是用在遥控功放上的。 **产的,普诚公司。我查了一下价格,一块多一个,估计不是什么好货。 20210311