
Sony, today, launched three new models of headphones and all that November 10th will be available on earphones, model 2
In respect of our headphones, we will have MDR-XB700 the 3 Hz -28000 Hz, 108dB/mW a sensitivity, 24 Ohms of impedance provides a frequency response. Also, 50mm driver units and facilities 3000mW maximum power input is accepted.
About MDR-XB500, you and a 4 recap of the reaction-24000Hz, 104dB/mW sensitivity, 40 Ohms, 40mm driver units of power impedance will be a maximum of 1500mW can accept input.

The MDR-XB300 and 5 of a frequency response-22000Hz, 100dB/mW a sensitivity, 24 Ohms, 30mm driver units to provide an impedance of a power 1000mW can receive input. You, respectively, 80 €, 55 € a price can expect about the price and 30 €.
This is in connection with earphones, MDR-XB40EX 4 a frequency response of-24000Hz, 105dB/mW sensitivity, 16 Ohms of impedance, and provides 13.5 mm drivers. The power to invest 100mW can get.
In the end, the MDR-XB20EX a frequency response of 5 you-23000Hz, 103dB/mW a sensitivity, 16Ohms an impedance, and will offer drivers of the 9mm.

Rounding out Sony’s loud announcement, this models behind-the-neck headphones feature a retractable cord and a collapsible neck band for portability. They come in black only for about $50 and use urethane cushions in the earpieces.