Product detailsWhat`s the different between G4000 G2000 and G9000??G4000 and G9000 weight about 330g,G2000 weight about 380g.?G4000 is the smallest size and the sound not good as G2000 and G9000. G2000 have larger in earmuff than G9000.?G4000 and G2000 suit for PC computer. Need splitter then could use in PS4 tablet.?G9000 is use in mobile and tablet,ps4. This model of headphone needs splitter to use in PC computer.???As some customer said can`t use microphone. We have test for many time and give you some suggestions.?G2000 You should connect the headphone plug to the device one by one. If use the G2000 to the pc computer. Please connect the audio plug first and setting well then connect the microphone after that. The computer will appear to ask for the setting. You just need to press the button for setting is OK.?PS4 Setting:?1. Before apply the headset on your PS4, please test it with your cellphone to ensure it function well.?2. Insert the headset own 3.5mm jack plug into the Gamepad, then long press the PS button or enter the system Settings.?3. There is a peripheral machines, choose “Adjust Sound and Devices”, “output to the headphones”, then change it to “all audio”.????KOTION EACH G2000: 2 ports of 3.5mm insert 1 for music 1 for microphone?Driver diameter: 50mm?Impedance: 16Ohm+/-15%?Sensitivity: 108dB +/- 3dB?Frequency range: 20-20KHz?Mic dimension: 6.0 * 5.0mm?Mic sensitivity: -38dB +/- 3dB?Mic impedance: 2.2kohm?Directivity: Omni-directional?LED working voltage: DC5V +/- 5%?Working current: Below 100mA