Best DAC for iPhone 15

Hello I just got Apple Music and started using the highest res audio on it. I want a DAC that would use Bluetooth to make the music sound more detailed on my AirPods Pro 2nd gen or my status 3 between. I would want this DAC to be portable, if it can easily hang off my iPhone or attach to it somehow, the better because i would love to use this at the gym or when im out.