DragonFly Cobalt - Sample rates supported (LED indicator color code):Standard (Red), 44.1kHz (Green), 48kHz (Blue), 88.2kHz (Yellow), 96kHz (Light Blue), MQA (Purple)Volume Control: Analog Volume Control (Black) 64-position, 64-bit, bit-perfect (Red, Cobalt)Output voltage: 1.2 (Black) 2.1 (Red, Cobalt)Headphone Amp: Texas Instruments TPA6130 (Black) ESS Sabre 9601 (Red, Cobalt)DAC Chip: 32-bit ESS 9010 with minimum-phase fast roll-off filter (Black)32-bit ESS 9016 with minimum-phase fast roll-off filter (Red)ESS ES9038Q2M with minimum-phase slow roll-off filter for more natural sound (Cobalt)Microcontroller: Microchip PIC32MX (Black, Red) Microchip PIC32MX274 reducescurrent draw and increases processing speed by 33% over DragonFlys Black and Red (Cobalt)Dimensions: 12mm H x 19mm W x 62mm L (Black, Red) 12mm H x 19mm W by 57mm L (Cobalt)-CAPABILITIES:Plays all music files: MP3 to MQA and High-ResCompatible with Apple® and Windows® PCsCompatible with iOS devices (requires Apple Camera Ad