TPA3116D2 Digital Power Amplifier Board 2x50W Dual Channel StereoSpecification:Audio type: TPA3116D2Input voltage: DC 5V~DC 24VOutput power: 2 x 50 WOperating frequency: 20Hz - 20HzOutput type: Double Track、 StereoSize(L*W*H): 10 x 5 x 2.2 cmOutput load: 4-8!#!amp!*!Omega;Frequency range: 14-100KHZNumber of channels: 2 (Left channel + right channel)Switching frequency: 1.2MHZFeature:Switch machine without !#!amp!*!quot;POP!#!amp!*!quot; sound.Comprehensive protection system、 Switch writers impact design.With power reverse connect protection、 the speaker supports output short circuit protection.Warm reminder:The best using the 24V power supply、 do not exceed the voltage.The audio output do not short circuit or short circuit to groundPlease check carefully prior to power connection、 make sure the connection is correct.Package includes:1 x Digital Power Amplifier Board1 x Cable1 x Small bag of fitting