Features:

32-voice wavetable synthesizer

32 channel for digital effects

Beyond CD quality recording and playback

Hardware mixing so you won't sacrifice game performance for good music

Line In, Line Out, Mic In, ATAPI IDE CDROM intraface, CD audio and Joystick/MIDI adaptor connector

20Hz to 20kHz +-3dB line output frequency response

< 0,1% total harmonic distortion with an input of -10dBm

> 80 dB signal to noise rate (line in to line out)

Expandable to 8 MB of RAM 

You can find the suitable vintage PC/Sound Card RAM modules in a different auction