This is a set of Pioneer DJM350 and CDJ350. I've been using them without any problems until today. The ability to instantly record and listen via USB is a fantastic feature for practice. The CDJ also supports USB without any issues. I think this is a perfect set for starting out as a DJ. I've been using them at home for about 5 years, and there's nothing in particular that concerns me, but as they are precision instruments, I ask for no claims and no returns. Please purchase only if you understand and agree to this.