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Bowers & Wilkins P9 (2016) vs Koss Porta Pro (1984)
Bowers & Wilkins P9 (2016)

reviewgeek.com, a review site with a history of doing objective hands-on testing, has great things to say about the Bowers & Wilkins P9 (2016). In fact, it's "Best Premium Headphones" in its "The Best Headphones And Earphones To Gift This Christmas" roundup, which points toward it being a good Over-Ear Headphone.
As for the Koss Porta Pro (1984) analysis - it impressed reviewers at Android Authority, a source that's known for its objective testing and well-thought-out methodology - it performed great in its "Best Headphones under $50" roundup and earned the "Ranked 2 out of 3" title.
Lastly, we tried to do a direct Bowers & Wilkins P9 (2016) vs. Koss Porta Pro (1984) comparison of review ratings between these two products, but couldn't find any review scores for the Koss Porta Pro (1984).
Compared to all other Over-Ear Headphones on the market, however, the Bowers & Wilkins P9 (2016) performed great. When averaged out, it earned a rating of 8.6 out of 10, which is much better than the 7.5 review average of Over-Ear Headphones in general.
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