The Beats Solo 4 Wireless deviate from the classic bassy sound seen in past iterations. Instead, they’re much more neutral sounding and are closer in response to the Beats Solo Pro Wireless. They have extra treble to make vocals and instruments sound bright and detailed, making them a solid choice for listening to content like podcasts or folk music. All this treble can be harsh and fatiguing over long listening sessions. If you crave the boomy, rumbly sound from predecessors like the Beats Solo3 2019 Wireless, you may be disappointed. But, if you’re willing to give them a chance, they still deliver a pleasing bass for most kinds of audio content. Unfortunately, there are no sound customization features available.

Although we tested their sound using Bluetooth, you can check out this graph to see how they perform with different connections. There isn’t a difference in frequency response when it comes to analog vs Bluetooth vs USB. It’s worth mentioning that the headphones have a built-in DAC that lets you play lossless audio from your phone or computer via USB-C, though. If you’re taking a call, the headphones will sound different, though. You’ll lose out on bass and treble, making your audio sound more hollow and dull.