Denon AH-MM400 (2016) vs Koss Porta Pro (2013)

The Denon AH-MM400 (2016) was loved by reviewers at Macworld, a trustworthy source that performs objective hands-on testing. It did great in their "Best iPhone headphones 2019" roundup - in fact, they named it their "Ranked 2 out of 8". That, by itself, points toward it being a noteworthy Closed-Back Headphone.

As for the Koss Porta Pro KTC - Rtings, a source that conducts reliable hands-on testing, has featured it in its Koss Porta Pro KTC Headphones Review roundup. However, it didn't make it to any of the top spots.

We tried doing a direct Denon AH-MM400 (2016) vs. Koss Porta Pro KTC review score comparison but couldn't find any sources that tested both.

Next, we took a look at which sources liked them best and found that the Denon AH-MM400 (2016) most impressed the reviewers at Head-fi, who gave it a score of 9.3, whereas the Koss Porta Pro KTC did best in its Rtings review - it scored 5.8 points.

Finally, we compared their average scores to all other Closed-Back Headphones on the market. We found that the Denon AH-MM400 (2016) got reviewed considerably better than most of its competitors - it earned an average of 8.9, compared to the 7.4 out of 10 overall rating of other Closed-Back Headphones - while the Koss Porta Pro KTC performed worse than most of its competition, with an average score of 5.8.