This part is a kind of semiconductor called AL1101.

Function of this product has stereo ADC.

Manufacturers : Alesis

Image and pinout :

Some of the text within the PDF file :

We make the parts that set creative people free ™ General Description The AL1101 stereo ADC is a high performance 24-bit analog to digital audio converter. Dynamic range is 107dB (Aweighted). The sensible pinout and easy user interface are unprecedented. The part has an internal high quality phaselocked loop that eliminates the need for external high frequency clocks. Features G G G G G G G G G G G G 24 bit conversion 107dB dynamic range (A-wt) .002% THD (input=-1dBFS) 64X oversampling, 5th order 1 bit ∆-Σ modulator 64:1 linear phase digital decimation filter sample rate variable from 24kHz to 55kHz digital high-pass filter total power consumption 110mW (Fs=48kHz) internal PLL derives all necessary timing signals from one external Fs clock serial output bit-rate selectable 32/24 bi [ ... ]

AL1101 PDF Datasheet Download