Why can't I play files on a USB memory device with my Marantz M-ER803?
- CChristopher JacobsSep 3, 2025
Ensure the USB memory device is formatted to “FAT16” or “FAT32” for USB1 port and “FAT32” for USB2 port. If the device is divided into multiple partitions, only files in the top partition can be played. The file may be in an incompatible format or covered by copyright protection.













