mono amplifier boards,audio amp boards,class D amplifier boards 1. Introduce SL-A09M is the High End class D mono design, it is new product of digital amplifier board，use SMT decal of main IC，connection is very simple。High Power efficiency，Less heat. 2. Application • Power speaker • Digital product • Computer and laptop • Portable product • Wireless product • TV, DVD and the other product　 3. Feature • 1*50W output power in mono mode(4Ω THD=10%) • High efficiency: Up to 90% • Filterless class D amplifier • Programmable gain(+22dB, +29.5dB, +36dB) • High PSRR(90dB at 1KHz) • Shutdown and mute control • Integrated click-and-pop suppression • Low 0.2% THD+N • Current limit and thermal protection • Available in thermally efficient, space-saving package: 56 pin TQFN • The dimension is only 59mm*45mm