Supply voltage: DC 8-26V (Do not overvoltage, overvoltage will burn IC)Input method: single-ended (factory default)Output power: 15W Stereo (24V 8 Ohm), 10W Stereo (12V 8 Ohm), if connected to 4 Ohm or 2 Ohm speakers, the power will be automatically limited to 15W)Differential (select by jumper)Size: 75.69mmx41.96mmProduct weight: 35gProcess materials:High-grade pure black gold circuit board, imported WIMA red audio capacitor, per channel large-capacity filter capacitor, special custom black pure copper terminal, gold-plated audio input terminal, pure black quad volume potentiometer (without switch).Performance:Efficiency: more than 90%Total Harmonic Distortion plus Noise: less than 0.2%Low quiescent currentNoise suppressionProtection: reverse power supply input protection, short circuit, over current, overheat, overvoltage, low voltage, over EMIAdditional features:External mute function (MUTE: high level mute, factory default low level)External Shutdown Function (SD: Low-Level Chip Shutdown, Factory Default High)Colour: picture colorMaterial: ABSPackage Contents:1 * Digital Amplifier Audio Board1 * ShellOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.