USB B to anything else

Hello, I'm going to purchase the Musical Fidelity M5si sooner than later and am just wondering how I can access the DAC if I'm not using a laptop. Maybe this is a naive question, but will I be able to plug my iPad straight into this unit? Is the USB B fairly useless unless you're doing actual computer audio, or are there cables to go from USB B to lightning or even coaxial or anything else?

On another note and out of curiosity, does anyone have experience with the DAC in that unit? I'd be curious to know if it will suffice or if I'll be wanting for a separate DAC.