Features: Highly fever digital amplifier board: The TPA3255 module use quality components to provide quality experience, suitable for users who pursues music. Quality materials: Highly performances D-class power amplifier chip supported by quality materials, reliable. Highly power output: Double channel stereoed design, with output reaching a highly power of 600W, can meet the needs of users who have highly requirements for sound quality. sound quality: Adopting advanced digital amplifier technology, the output signal is clear and purer, with rich details. Strong stability: Good heat dissipation design and stable circuit protections function ensure stability can still be maintained during highly load operation. Specifications: Material: Printed Circuit Board Size: about 122x73mm/4.8x2.87inch Suitable for 2-16Ω Speaker Amplifier IC: TPA3255 chip Input: 3.5mm Operating efficiency: > 90% Frequency Response: 20Hz to 20KHz Dynamic Range: >100dB Signal-to-noise ratio: >111dB Power supply: DC19 to DC50V (current suggested above 5A) Package Includes: 1x Digital Amplifier Board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.