I will say this about the Beats Studio Pro, they are the most accurate sounding Beats headphones ever in my opinion. It actually sounds more natural (less digitized) than the AirPods Max to my ears. When I first listened to them, I was actually shocked. I've been a fan of the Beats loud, super punchy, in your face sound. Beats has always been my workout headphone. These Beats are the exact opposite. They're quieter, less mid and upper bass heavy, and closer to neutral. Don't get me wrong, they still have some bass impact, but I'm actually getting more sub bass than the Studio 3. It sounds to me like Apple dropped the mid and high bass down a little and upped the sub bass which gives you less punch, but a more even bass response. It still doesn't give you the level of sub bass the AirPods Max give you, but it's more than the Studio 3. Compared to the AirPods Max, the Beats are more portable with better battery life. They're comparable in phone call quality with Beats actually having a better noise filter system to block outside noise while on a call. I'd give a slight edge to the AirPods Max in mic quality though. Comfort is subjective, but I can say they are comparable. The Beats are much lighter with a higher clamping force and more stable fit if you like to be active with your headphones. The AirPods Max material on its headband make it more comfortable on top of the head. The AirPods Max still get the nod for anc and transparency. I don't see anyone touching the AirPods Max transparency mode. As far as build quality goes, obviously the AirPods Max are leagues ahead. Only time will tell what small modifications, if any, Apple made to the design. Just looking at it and holding it though, it feels the exact same as the Beats Studio 3. I will save my final verdict for my comparison, but I will say that if you already own the AirPods Max, I wouldn't sell it for the Beats Studio Pro unless you just desire a better workout headphone. If you're trying to decide on a new purchase between the two, I personally would take Beats Studio Pro. It gets you 95 percent of the performance of the AirPods Max for over $100 less. You don't get the seamless switching between your Apple devices since it doesn't have an Apple chip, but in return you get USB-C lossless listening and a more versatile sound signature in my opinion. The best way I can describe it is the AirPods Max sound more cinematic while the Beats sound more natural. In saying all of this, I think the ultimate decision would be to wait on the AirPods Max 2. I have a feeling Apple is going to hit that one out of the park based on how good these Beats Studio Pro are.
As far as the PX7 S2 goes, I no longer own that headphone, but from memory, the Beats would obviously be my choice if in the Apple ecosystem. As far as sound quality goes, the PX7 S2 are darker, and I can't believe I'm saying this, more fun in nature. The Beats are the more neutral sounding.
I honestly haven't listened to the Beats Solo Pro in years. From memory, the Beats Solo Pro were the first Beats pair to truly dial back the bass. The Beats Studio Pro are the same in this regard.
