If the buzz is there when you're not playing sounds, then it's not the DAC. It's some sort of grounding issue. Does it happen with the line output also? I've definitely seen the CZ-1000 service manual around for download, just can't remember where :( But I would say that you could safely refer to the CZ-1 service manual for DAC offset in the 101.
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Re: Any Mods to Make CZ101 Quieter
2009-09-29 by tomulcahy