Need a Portable Amp/Dac for DT 1990 Pro

I am getting the Beyerdynamic DT 1990 Pro headphones in the next couple of weeks. I primarily listen to music sitting outside on my porch so I am looking for a portable amp/dac combo that can power the headphones and plug into my iPhone. I also use Tidal as my music source so it’d be nice if MQA is supported. So far I’ve been considering the ifi xDSD but have also been wondering if the ifi hip-dac is much of a step down from that since it’s less than half the price. Does anyone have any input on either of those or other suggestions?
Thanks in advance

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