As the sequel to Sony's popular MDR-EX70 and -EX71 earphones, the brand new MDR-EX75 ($50) has been designed to strike a happy medium in performance and style between the company's lower-cost -EX50 and higher-priced -EX80 and -EX90 earphone families. With metal and glossy plastic body styling similar in materials to the MDR-EX85 we've recently reviewed, but an in-canal form factor more like the MDR-EX55, this new model comes with a hard plastic carrying…
