Pioneer CDJ-850 CDJ-850 Owner's Manual (English) - Page 8

About USB devices This unit supports USB mass storage class USB devices (external hard disks, portable flash memory devices, digital audio players, etc.). Folder layers Max. 8 layers Max. number of folders 1 000 folders Max. number of files 10 000 files (1 000 files for files not managed by rekordbox) Supported file systems FAT16, FAT32 and HFS+ (NTFS is not supported.) When there are many folders or files, some time may be required for loading. Folders and files exceeding the limits cannot be displayed.  USB devices that cannot be used ! Optical disk type devices such as external DVD/CD drives, etc., are not supported. ! USB hubs cannot be used.  Cautions on using USB devices ! Some USB devices may not operate properly. Please note that Pioneer will accept no responsibility whatsoever for loss of data recorded on USB devices. ! It may happen that, when a current above the allowable level is detected in this unit's USB port, the [USB STOP] indicator flashes, the power supply to the USB device is cut off and communications with the USB device are interrupted. To restore normal operation, disconnect the USB device from this unit. Avoid reusing USB devices for which an excess current has been detected. If normal operation is not restored (if communications cannot be established) after the above procedure is performed, try turning off this unit's power then turning it back on. ! If multiple partitions are set for the USB device, the device may not be recognized. ! USB devices equipped with flash card readers may not operate. ! Depending on the USB device you are using, the desired perfor- mance may not be achieved. Playable music file formats This unit supports music files in the formats shown below. Type MP3 AAC WAV AIFF File extension .mp3 .m4a, .aac and .mp4 .wav .aif, .aiff Compatible formats MPEG-1 MPEG-4 AAC LC WAV AIFF Bit depth 16 bit 16 bit 16 bit, 24 bit 16 bit, 24 bit Bit rate 32 kbps to 320 kbps 16 kbps to 320 kbps - - Sampling frequency 32 kHz, 44.1 kHz, 48 kHz 32 kHz, 44.1 kHz, 48 kHz 44.1 kHz, 48 kHz 44.1 kHz, 48 kHz Encoding method CBR, VBR CBR, VBR Uncompressed PCM Uncompressed PCM About MP3 files MP3 files can have a constant bit rate (CBR) or a variable bit rate (VBR). Both types of files can be played on the CDJ-850, but the search and super fast search functions are slower with VBR files. If your priority is operability, we recommend recording MP3 files in CBR. About AAC files ! AAC is the abbreviation of "Advanced Audio Coding", a basic format of audio compression technology used for MPEG-2 and MPEG-4. ! The file format and extension of AAC data depends on the application used to create the data. ! In addition to AAC files with the extension ".m4a" encoded with iTunes®, files with the extensions ".aac" and ".mp4" can also be played. Note, however, that copyright-protected AAC files purchased for example at the iTunes Music Store cannot be played. Also, some files may not be playable, depending on the version of iTunes used for encoding. 8 En