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Archimago's Musings: MEASUREMENTS: Sennheiser HD650 (~2010-2012) and HD800 (~2010). A comparison of two "Reference Class" headphones, and a look/listen to the "Sennheiser veil / darkness". [Inexpensive 2TB SSD and inflation in consumer electronics...]
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Drop x Sennheiser HD 6XX Headphones Review - HD 650 in Disguise - Fit, Comfort & Audio Performance | TechPowerUp
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