For Qualcomm QCC3084 Bluetooth 5.4 chip Supports LDAC/AptxHD protocols, 24bit/96kHz bitrate transmission Enthusiast's computer USB professional decoder Italian Amanero Combo module digital interface, DSD512 hardware decoding, PCM 384kHz/32Bit USB playback supports master-quality audiophile files: DSD, DSF, DFF (DSD64-DSD256).Supports Dolby Digital DTS format files: mainstream lossless audio files such as WAV, FLAC, APE, ISO, MP3, etc U disk play Supports up to 512 folders and can store and play up to 99,999 music files.USB flash drives or external hard drives must be formatted as EXFAT or FAT32, and support is available up to 2TB TFT full color display Intuitive display and clear operation Input status, signal format, volume level, playback status, file information Dynamic range: greater than equal 121dB Harmonic distortion (THD):less than equal 0.0005% Frequency response: 20Hz-20kHz (±0.06dB) RCA output level: greater than 2Vrms Recommended headphone impedance for this phone: 16-350 ohms Input voltage: DC12V/1A (The product printed words may vary depending on the batch, but this does not affect use) Type:With USB Color:As Shown Material:Aluminum Alloy Package Contents: 1 * HIFI DAC Earphone Amplifier