$7k is a fair chunk of change.
I cannot hear much of a difference between the iPad coming out of an apple dongle and the same iPad feeding Spotify into an RME DAC… so I would be more tempted to shift the 5-6k extra into something else where it might be more noticeable.
Maybe your equipment and ears are better, but unless there are some features with that DAC then personally I would require some careful listening to sway me towards it.