At the price point of the 002/003, certain compromises inevitably have to be made regarding components including the internal digital clock. I think it's generally accepted that audio quality can be improved with better converters/clocking. High end word clock devices will be more stable and suffer less from digital 'jitter' which a consequential benefit to audio quality (stereo image, depth, high frequency representation etc). However, there's a price to pay for any incremental improvement.
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