Features: Audiophiles sound quality: Provides high-quality losslessly audiory amplification, restores the details of the music and brings ultimated listenings experience. Stereos Adjustment: Support high and low sound adjustment function, users can adjust the audiory output effect according to their preferences. Powerful power output: the amplifier board module 220Wx2 output power, suitable for a variety of speaker systems, providing powerful sound. Stable: Adopting high-quality components and design, good heat dissipation performances and stability, which ensures that it is not easy to have problems in long time operates. Audiophiles: audiory enthusiasts in pursuit of high quality sound, user groups with high requirements for audiory effects. Specifications: ModelXY-T220H Chip: TPA3251D2 Power:220W+220W DC12-36v 8A Audiory Channel: Stereos Sound/2.0 Frequency: 20hz-20khz Audiory AdjustementBass/Treble Size:About 125mmx88mmx32mm/4.92x3.46x1.26in Package Includes: 1 Set XY-T220H Audiory Amplifier Board note: Due to problem of lighting effect and shooting, there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement.