9.Can K5 Pro connect to an iOS or Android device?

Yes, due to different interfaces, Android phones need to use OTG cable to connect; Apple phones need to use camera kit to connect.

From a technical point of view and actual measurement, Q5s can work with most of the TYPE C interface Android phones, with FiiO Music to complete lossless and DSD decoding. However, not all Android phones can output standard USB audio. Even if a certain version of a model is supported, it may not be supported in the next version. So we can't publicize and promise this feature.