The WH-1000XM4 is the latest in Sony's popular series of flagship noise-canceling wireless headphones. The 1000XM4 arrive two years after the launch of their predecessor, which received universal acclaim. With the 1000XM4, Sony has chosen to, once again, not reinvent the wheel but just bring minor improvements across the board and further refine what was already a good product. The improvements on the 1000XM4 focus largely on the software side, with the inclusion of things like a new noise-canceling algorithm, multi-device pairing, a 'speak to chat' feature, DSEE Extreme, improved...