YATEC 2.1 subwoofer power amplifier & preamplifire

YATEC Samp311  250w 2.1 subwoofer audio power amplifire PCBInput Voltage = 36v Dual ACInput Current = 5A or aboveOutput Power 2.1 = 75W 75W 100woutput impedence = 2x  8 Ohm & 1x 4 OhmOnbord 2.1 Speaker Protection ( soft start & DC Protection)pcb size = 22.5 cm x 8 cmPCB thickness = 1.6mmBlue color painted topAll Value Printed Silksreen pcb topCoated with solder side Oxide Protection layerBuilt in Onbord Power suplydesign with 6 ( tip35c*3 tip36c*3) audio amplifire power transistor (Can Replace C5200 & A1943 Transistors)high quality low noice op-amp pre amplification driver with four Driver transistorsvery smart small size pcbThis Package Include YATEC SAMP311 2.1 SUBWOOFER  PCB Onlyblast your music experience with yatec power ampYATEC prs311 full range tone control & 2.1 subwoofer pre amplifire with mic echo  PCB Onlyyatec prs311 pre amplifire is a full range tone control 2.1 subwoofer pre amplifire with mic echo  function its build with dual step op-amp audio amplification and high sensitive mic pre amplification & low pass filter on one bord no any hum it has a very clear low noice heavy bass  sound output.Input Voltage = 12v 0v 12v (Dual AC)Input Current = 300 ma or aboveMic input Type = Dynamic or Condensor Borth types are acceptedMic Base Type = 6.5mm stereo2 Mic Input ( one mic base in On bord & you need to solder extra Mic base For use 2nd mic input)pcb size = 24.5 cm x 6.2 cmPCB thickness = 1.6mmBlue color painted topAll Value Printed Silksreen pcb topCoated with solder side Oxide Protection layerstereo full range tone control –  treble, midrange, bass ( low, mid, high)its can use condenser & dynamic microphone typesMic 2 input (need to solder extra Mic base to bord for use Two mic’s )built in high sensitive mic pre amplifirebuilt in mic echo functionbuilt in subwoofer Low Pass Filterhigh quality low noice NE5532 op-amp pre amplificationits have vu meter signal out for your vu meterEight tone controlMaster volumeTrebleMidrangeBassSub FrequencySub VolumeMic VolumeEcho levelThis Package include yatec Prs311 Fullrange Tone Control 2.1 Preamplifier PCB Only.