... .multiple audio sources selection 2.special power supply and power rectifier filter 3.CIRRUS top chips 4.enjoy your life Hifi360 ... value conversion part uses the Motorola ceramic rectifier diodes, other than rectifier diode rectified DC voltage waveform is more suitable for ... Ordinary level two the waveform is rectangular in shape, ceramic rectifier diode can obtain a smooth waveform of DC voltage, at ...