HiFiMAN’s superb HE-5LE Planar Magnetic Headphone could not only hold its own versus competitors roughly twice its price, but it could also in some respects surpass them. Obviously this meant the HE-5LE was a bargain, a product with performance so good you might think it would be pointless try and improve upon its design. But happily for us, they’ve just introduced an even more impressive flagship, called the HE-6.