Hi Peter,

Thanks for get in touch with us. Basically you can use most of the CDJ in the market with DVS mode. Yes you can use Pioneer CDJ1000mk2. Official Serato control CD's signal is WAV or ISO format file and not mp3.

Please make sure you are using official control CD and enable DVS mode on expansion pack tab of Serato DJ setup window if you are going to use with DDJ-SZ.

I hope this clears things up.

Kind Regards
Rui