Cayin RU6: R-2R USB Dongle DAC with Head-Amp
Best dongle/dac either lightning, or if USB-C, iOS compatible
iPhone15 sucks..? : r/inearfidelity
And drumroll they do sound different (who would've guessed
5 more dongle DACs for your consideration
Driving Power-Hungry Dongles With DAPs/Android Devices And IPhone
Portable DAC, HiFi Sono DIY
Will attaching my IEM to a cheap lightning/usb-c adapter affect
Dongles for iPhone : r/inearfidelity
With Apple USB C to 3.5mm dongle you can have 4 channels
Cayin RU6: R-2R USB Dongle DAC with Head-Amp, Page 7
GAMDER USB Type C to 3.5mm DSD256 Hi-Fi Audio Chip