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I purchased one of these units and it completely broke down after about 20-30 gigs. Good -- works for about 10 gigs Bad - loud screeching when turned on and off that damaged hearing and causes ear ringing - proprietary XLR cable works intermittently and plays loud screeching noises - the screws constantly are falling out and must be taped to keep box together - Presonus doesn’t offer a good warranty - Presonus takes up so much time creating an online account and filling out forms to even submit a warranty claim Unfortunately I recommended this box to a few band mates of mine. We’ve all had the same experience of poor quality. Stay far away from this box unless you want to throw your money away and damage your hearing.