... D design, it is new product of digital amplifier board, use SMT decal of main IC, ... End music system Computer and laptop HIFI system Wireless product TV, DVD and the other product 3 ... %) High efficiency: Up to 90% Filterless class D amplifier Programmable gain(+22dB, +29.5dB, +36dB) High ... thermal protection Available in thermally efficient, space-saving package: 56 pin TQFN The dimension is only 48mm ...