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NAD VISO HP70 vs Koss Porta Pro (2013)
The NAD VISO HP70 is a relatively good Closed-Back Headphone for people that are willing to spend around $340. The Koss Porta Pro KTC, by contrast, is quite unremarkable and doesn't stand out in any meaningful way from other products at this price point.
If you're still interested in learning more about the NAD VISO HP70 and Koss Porta Pro KTC, however, we wrote a summary of what we know about them:
The reviewers at Wirecutter (NYTimes) have featured the NAD VISO HP70 in their The Best Bluetooth Wireless Headphones roundup. However, it fell short of making it to the top of their list.
Taking a look at the Koss Porta Pro KTC, it got featured in roundups from two reliable sources that conduct their own testing - CNET and Rtings - but it fell short of earning a top spot in either.
We meant to do a direct NAD VISO HP70 vs. Koss Porta Pro KTC comparison of their review ratings, but couldn't because we weren't able to find any review scores for the NAD VISO HP70.
Lastly, we examined how the Koss Porta Pro KTC stacks up against other Closed-Back Headphones on the market by comparing their average review ratings. We found that it managed to earn an average review score of 7.1 out of 10 points, which is comparable to the overall, 7.4, average of Closed-Back Headphones in general.