The Donner DMK-25 Pro is an all-in-one mini-sized MIDI controller with all manner of keys, knobs, sliders, and even some pads to lay down some sick beats on. It costs $110-$200 depending on where you source it, and it’s a follow-up to the successful DMK-25 non-pro version. Is this an ideal compact keyboard and multifunction mini MIDI controller for you, whether you’re a complete beginner like me, or even a seasoned pro? Let’s find out.