Sony WH-1000XM4 (2020) vs beyerdynamic DT 990 Pro (2004)

The beyerdynamic DT 990 Pro (2004) is an example of a great product that certainly makes for a good purchase for people that are looking to spend $140 on a Open-Back Headphones.

In the case of the Sony WH-1000XM4 (2020), however, we weren't able to find enough data to come to any reliable conclusions.

No sources that do their own in-depth testing have considered the beyerdynamic DT 990 Pro (2004) to be a good enough purchase for it to earn a sport in their Open-Back Headphone roundups, which is typically a bad sign.

Moving on to the Sony WH-1000XM4 (2020): no sources that perform reliable and objective hands-on testing have included it in their Open-Back Headphone roundups, which usually means that a product doesn't make for a good purchase.

As a last step, we wanted to do a head-to-head beyerdynamic DT 990 Pro (2004) vs. Sony WH-1000XM4 (2020) comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.