iPodNN: Sony Japan has introduced over-ear headphones that features the largest drivers so far available — 70mm, or 2.75 inches in diameter — called the MDR-XB1000, aimed at fans of music with deep bass and boasting an incredible 2-30,000Hz frequency range. The company also brought out two different lines of earbud-style headphones available in a range of colors and called the MDR-XB41EX and MDR-XB21EX, also with extra bass response. The new models will be released in Japan on February 10th, and hopefully appear in the US and other countries shortly afterward.
The MDR-XB1000′s incredibly low frequency range — topping even the XB700′s 3Hz bottom end — is well beyond the range of human hearing, but helps to add punch to bass notes, the company says. The drivers are padded with elastic polyurethane foam “cans” to isolate the sound, resulting in a top sound pressure of 106 decibels with a 24Ω impedance.
The MDR-XB41EX in-ear headphones feature a 13.5mm (.53 inch) driver, while the MDR-XB21EX uses a 9mm (.35 inch) driver, but both deliver sound pressure of over 100 decibels with a 16Ω impedance. Top sound pressure reaches 105 dB for the 41s and 103 db for the 21s. The 41s use an angled design to allow the driver to be larger than normal as well as act as an isolating “umbrella” that partially covers the ear canal, allowing for more focus on the sound, where the 21s are more conventionally-designed earbuds with a smaller driver. Both come in various colors, including black, blue and red, along with some multi-color combinations.
Retail price for the large MBR-XB1000 headphones in Japan translates to approximately $377, while the MDR-XB41EX sells for around $75 and the MDR-XB21EX costs $45.