Abstract: The invention provides an audio video digital signal processing device comprising a plurality of memory interfaces or connecters adapted to receive memory means, a digital signal processor DSP adapted to detect connection of memory means in the memory interfaces and to recognize the audio video format of the stored data, an audio output for audio signal output, a video output for video signal output, and a digital to analog converter and amplifier controlled by the DSP to process audio and video signals from the memory means for output to external audio and video apparatus through the audio output and the video output. The audio and video signals can be processed with a variety of personalized presentation effects based upon users requirements.