DAIICHIKOSHO DAM-XG1000Ⅱ Red, Used, Tested and Working. *Dust filter not included. *This is a commercial model. A distribution contract is required. Please consult with a professional. Please bid only if you understand this. Self-diagnosis: Good Backup: Good Test song playback test: OK Video output test: OK (No distortion) Audio output test: OK The unit has been cleaned after the service ended, but it is a used item, so there may be scratches, scuffs, and stains. No claims, no returns. Returns are not accepted. It seems you can use it at home if you update it, so please ask a professional. I cannot do it.