When you think of true surround sound stereo systems, you imagine cumbersome multi-speaker affairs that take all day to set up. Sony may have just upended that notion with its HT-AX7 portable theater system, complete with 360 spatial sound mapping. The hook here is that the speakers are detachable and the whole system can easily be moved from room to room without a trip to the chiropractor.The system uses the company’s proprietary spatial sound mapping technology to create phantom speakers at the front, rear and overhead. These audio sources integrate with three detachable and fully portable speakers, enveloping listeners in a “bubble-like sphere” of spatial sound. The system is designed so anyone can set it up, so there’s no need for a special installation of any kind.Beyond the portable form factor, the HT-AX7 system uses a real-time algorithm to upscale stereo sound into 3D surround sound. You can also disengage this feature for garden variety “room-filling sound.” All o
