It’s back in stock: The Duo-i plus AM/FM Stereo Radio with iPhone/iPod Dock from Boston Acoustics. At its most basic, the Duo’s a clock radio with terrific stereo sound delivered through dual high performance 3½-inch full-range speakers (add to the sound by connecting an optional subwoofer). But throw in its iPod/iPhone dock with video output and it can also deliver big-time performance through your home audio or video system. And it’s just $249 and back in stock. What are you waiting for?