Rough translation follows. Great headphones BTW. Very accurate reproduction without being dry or boring at all. The SACD listening stations in Japanese HMVs all have MDR-CD900STs.
-kaitsuburi
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To: All Customers
From: Sony Music Communications, KK
Thank you for purchasing the MDR-CD900ST!
These professional-grade headphones have been produced through the collaboration of Sony Corporation and its Music Studio Division. Please consult the table below for exact specifications.
Please direct all inquiries pertaining to the product itself to the product support contact below. Please direct all repair/replacement requests to the repair support contact below.
We regret to inform you that since these are professional-grade headphones engineered for use in music studios, we do not offer a free repair period. However, all repairs/replacements of defective products are free of charge. We appreciate your understanding in this matter.
Product Specifications:
Impedance: 63 Ohm
Rated Input: 300 mW
Max Input: 1,000 mW
Frequency Range: 5-30,000 Hz
Cord Length: 2.5m
Weight: ca.200g (cord included)
Product Support Contact:
Sony Music Communications, KK
Special Sales Planning Division / Special Sales Dept
Ichigaya Tamachi 1-4
Shinjuku-ku
Tokyo 162-0843
Repair Support Contact:
Makeup Company, YK (weird name, eh?)
Jiyugaoka 2-15-17
Meguro-ku
Tokyo 152-0035