Pump up the Volume This Memorial Day with a Limited-Time Deal on the Sony ULT Field 7 Speaker

Boom boxes have come a long way since the iconic serenade scene in the 1989 film Say Anything. They're smaller, lighter, more powerful — and come with new-fangled technology called Bluetooth. Whether you're looking for a portable speaker to woo your soulmate or to simply play your favorite tunes this summer, you're in luck. One of our favorite Bluetooth boom boxes, the Sony ULT Field 7, is now 20% off in a limited-time deal on Amazon. That brings this CNET favorite to just $398 while the deal lasts. Its list...