Rotel's DX-3 headphone amplifier, pre-amplifier, and DAC is designed for music lovers who want improved personal listening.
The Questyle M12 mobile headphone amp/DAC offers ultra-low distortion CMA amplification technology, and is available via Bluebird Technology
A hands-on review of the SoundBlasterX G6 hi-res DAC and headphone amplifier for improving the sound from computers and gaming consoles
A hands-on review of the Audioquest DragonFly Red headphone amplifier.