TRN TE Pro Portable Headphone Decoding Amplifier OLED Screen Lossless HiFi DAC Amplifier ?OLED Display: High-definition display for text,menus,and more ?Dual Outputs 3.5mm + 4.4mm: 3.5mm single-ended and 4.4mm balanced output for dual headphone connectivity ?Multi-function Buttons: Simple operation for an effortless experience ?Supports S/PDIF Output: Standard digital audio transmission ?Dual Flagship DAC Chips: Two high-performance CS43198 DACchips for low noise and high output ?High Resolution,Clear Detail: Supports PCM 32bit/768kHz and DSD256 ?Specifications: ?DAC chip: CS43198*2 chip ?USB type: Type-C USB2.0 ?Support specifications: 32bit/768kHz,DSD256 ?Size: 57mm*23mm*13mm ?Weight: about 25g (excluding wire) ?Screen: OLED display ?Maximum output power: 2X125mW (RL=32|? single-ended,THD+N?��1%) ?Maximum output power: 2X240mW (RL=32|? balanced,THD+N?��1%) ?Signal-to-noise ratio: 125dB (32|?/A weighted/single-ended) ?Signal-to-noise ratio: 130dB (32|?/A weighted/balanced) ?Operating voltage: 3.4V-5.3V ?Wire internal resistance: ?��200|? ?Channel crosstalk: -68dB (RL=32|? single-ended,10mW) ?Channel crosstalk: -117dB (RL=32|? balanced,10mW) ?Total harmonic distortion: -108dB (RL=32|? single-ended,100mW) ?Total harmonic distortion: -106dB (RL=32|? balanced,100mW) Package included: ?1 x Headphone Amplifier ?1 x English and Chinese User Manual ?Other things not included