
Global number of reviews per-product for leading headphones on Amazon 2019-2020
Since the beginning of 2020, there has been a significant rise in consumer reviews in the top 100 headphones category on Amazon's international marketplaces: the average number of reviews per product grew from about 6,000 in January 2020 to nearly 25,000 in December 2020. In 2019, monthly reviews remained under 5,000 per headphones product.