Thinking of trying to record your next concert, but worried about smuggling in the kind of equipment you need to get decent sound? Worry no more. The H4 Pocket-Sized Digital Audio Recorder ($300) is a palm sized wonder that uses two studio-quality condenser microphones to bring true stereo sound to your personal bootlegs. It provides recording directly to .wav or .mp3 formats, which it stores on expandable SD media. Also, it features two combination XLR-1/4-inch input jacks with phantom power, letting you save your jam sessions right to the recorder.