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Headphone amplifier IC?

Hello everybody, I am thinking about adding a headphone amplifier IC to my adau1701. I know that there are quite a bit of such ICs on the Earth, but I have never worked with any. Could please anybody advise me, whether there is any AD headphone amplifier IC with integrated volume controller, which can be driven with simple push buttons, like AD's digital potentiometers? If AD doesn't make such IC's, perhaps somebody knows some other manufacturer's amplifier, which has the features I described?

Thank you in advance!!