Headset in addition to pressure on the ear uncomfortable

headset in addition to pressure on the ear uncomfortable<br /><br />MDR-E888: 888 enthusiasts now is the most exciting one ear , and it allows you to appreciate the taste of HiFi is the pursuit of quality friends preferred headphones despite nearly 400 yuan price . He used the wire signal attenuation tiny crystal oxygen-free copper wire , the diaphragm is the best use of the human voice to restore biological diaphragm which is a major factor in the high price of 888 . 888 best place is sound , especially sweet, mellow , charming, This alone can make it big with some one thousand headphones comparable. <br /><br />This resistor Ra resistance should be 0.1 to 1 times the resistance of the headset in order to have heard the difference. However , do not use too small Ra, or you use a lot of current amplifier signal to get enough sound pressure , may have a negative effect on sound quality . Also note that this resistance have enough cooling power .. <br /><br />Bring only AKG, the headphones sound Bi Senhai look more professional that the reduction of the human voice is more clear and bright, the bass is also Bi Senhai listeners generally a little more, the sound is very balanced in each band . Drawback is that noise is not good , DISCO dance DJ If you use this , to ensure not hear anything . Unfortunately, no one is ever pay attention to this station CNN radio reporter have used the small things .. <br /><br />MDR-E868: 868 SONY is the second top earplugs, second only to the king with earplugs E888, but the price is relatively much less . Diaphragm is used in high-grade sapphire diaphragm evaporation coating , transparent and clear treble , very clean, about 0 channel separation is obvious. Although dive deep bass , but not vigorous . <br /><br />MDR-E838/E837: because the number and shape are relatively similar, these two brothers seemingly looks like a pair of headphones . In fact, there are big difference between the two : the drive unit , E838 uses a diaphragm of 16mm , 13.5mm and E837 using a diaphragm , which leads to a better than 837 838 bass . The tones , some differences between the two , 838 compared Tough forceful and some of the atmosphere . <br /><br />If you tap with your fingers closed headphones cheap plastic earpiece heard the shrill sound, which is mechanical resonance . You can try to attenuate this mechanical resonance , with some noise canceling headphones shell material posted on the inner wall . But beware, the acoustic resonance is usually much larger than the effects of mechanical resonance ..