Building on the success of last year's iRig KEYS (iLounge Rating: A-/B+), IK Multimedia has released iRig KEYS PRO ($150), essentially a big brother to the company's earlier portable MIDI keyboard controller. iRig KEYS PRO provides all of the same features as the smaller model, including the relatively compact, bus-powered design, while delivering a three-octave set of full-size, velocity-sensitive keys. It can be used with any Core MIDI compliant…
