Musical device maker Line 6 has widened its range of music-making peripherals to include these two new MIDI controllers for your iDevice. It's the first (so it says) bus-powered gear that'll draw a tenth of your iPad's battery -- meaning you'll likely get nine hours of music-makin' on a full charge. We gave the devices a play and found it a joy to use, the keys were comfortable and had some weight, solidly built with chunky rubber volume controls and LED-backlit octave switch keys. The only downside is there's no natural slot (or groove) to place your iPad at the right angle for sustained use. After the b
