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yiri
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Jun 19, 2015
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Speaking of TH-900s,
> As all that power requires some real juice,
Hardly the reason for the high impedance. Beyerdynamic's T1, famously, develops a magnetic flux density of 1 Tesla. TH-900s develop 1.5 Tesla with a impedance of 25 Ohms. High impedance was, as we should all know, a technique used by headphone manufacturers to improve SNR; unable to get a really black background, they increased impedance and amplified the signal (and, hopefully, not the noise.) New manufacturing techniques have made this an unnecessary technique, but it remains an effective one.
PS: Incidentally, if you like nice watches as well as nice headphones, you may be interested to know that Rolex's famous Milgauss watch - known for magnetic resistance - is rated for fields up to 1,000 Gauss - hence the name. 1,000 Gauss is equal to 1 Tesla - so you probably shouldn't leave any mechanical watch with a pair of active T1s, and DEFINITELY not a pair of TH-900s.