It's a zoom zoom world for many of us, but there's really no need to skimp on sound quality. These on-the-go units bring a luxury and quality to my daily commute that I wouldn't trade for anything. There's nothing like pulling out your small tableau of sd cards and taking the ride of your life. Both players we carry are dual dac players with tremendous versatility and the ability to drive all but the most demanding headphones. They also have gain controls so you can use your CIEMs. planars, or good ole dynamic cans. Life is good...very very good.