Features: Adopting high-performances ES9038 chip, reducing distortions and significantly improving sound quality. Main control decoding SA9312L, supporting up to DSD256/384Khz sampling rate. Adopting integrated cutting all aluminum metal housing sprayed, electroplated with brushed silver, with texture! Equipped with 3.5mm single ended and 4.4mm balanced double output interfaces, it can freely switching between two plugs no need for adapter. You can listen to music by inserting 3.5mm/4.4mm headphone port at the same time. Specifications: Material: ABS Color: Black Size: about 5x1.6x0.7cm/1.96x0.62x0.27inch Frequency: 15-90KHz Output power: 3.5mm 2x250mW; 4.4mm 2x300mW Dynamic scope: 132dB Bit depth: 16bit/24bit/32bit Decoding format: DSD supports 64/128/256 Package Includes: 1pc Decoding Earphone Amplifier note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.