Onkyo enters a crowded headphone market with an eye toward treating your ears to hi-fi. The ES-HF300 features 40mm, dual ported titanium drivers in a full-sized on-ear headphone that remains efficient and mobile-device friendly. The Japanese hi-fi company has carved a reputation for crushing cost-to-performance expectations. But its new line marks Onkyo's first-ever foray into the headphone market. In this review we'll put Onkyo's flagship cans to the test to see if they're built on the company's sound reputation or if they're just a pair of also-rans in a market that's too often more hi-style than hi-fi. Discuss "Onkyo ES-HF300 On-Ear Headphones Review" here. Read the article.