When we reviewed it back in 2012, we gave high marks to HiFiMan's HE-400 headphone. Now discounted to $300, that full-size model remains on the market as the company, known for making superior sounding headphones that outperform sleeker-looking headphones from name brands like Beyerdynamic, Bowers & Wilkins and Sennheiser, has released its newly redesigned HE-400i ($500, £360, AU$699).