Features: The ADAU1401 is a complete single-chip system with built-in 28/56-bit DSP, ADC, DAC and microcontroller-like control interfaces. Signal processing techniques including equalization, crossover, boost, multi-bands dynamic processing, delay compensation, speaker compensation, for images widening can be used to for the practical limitations of speakers, amplifiers, and listen environments, dramatically improving the sound quality experience. The ADAU1401 program can be loaded from the EEPROM through its self-booting mechanism at powers-up or from an external microcontroller. When turned off, the current state of the parameters can be written back to the EEPROM from the ADAU1401 to be recalled the next for time the program is run. Two ADC and four DACs provide 98.5dB of analogs input to analogs output dynamic ranges. Seamless connection to other ADC and DAC is possible digital input and output ports. The ADAU1401 communicates over an I2Cbus or a four-wire SPIport. This edition is suitable for ADAU1401/1701/1702 learning and product use. The ADAU1401 is more stable than the ADAU1701 in the harsh working environment of -40-105 (the ADAU1701 is generally 0-70). The program can be used universally and other indicators are the same. It has self-starting after power-on and can be completely separated from the single-chip operation. Leads to all function ports, which can expand digital I2S input/output/for key function/LED drive/auxiliary ADC (potentiometer analogs)/encoders volume adjustment. Specifications: Material:PCB Board Size:Approx.5x3.5cm/1.97x1.38in Emulator Size:Approx.6.3x2cm/2.48x0.79in Option Type:1xDSPmini Learning Board,1xEmulator; Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: Package A 1xDSPmini Learning Board Package B 1xEmulator