There are lots of headphone amps, but only the Vamp Verza works with the digital output of an iPhone or Android device, and that's a difference you can hear.
Creative Technology's Sound Blaster X7 is designed to be a powerful amplifier in a compact box. The device is slated to cost $400.
The Audiophiliac oohs and aahs over Sony's portable PHA-2 digital converter and headphone amplifier.
Music streamer startup Rocki says it plans to "revolutionize the industry" and plans additions to its Play product series such as more music services, better support and new devices.
The Audioengine D3 may be teensy, but this affordable component can radically upgrade your computer's sound quality!
The Cypher Labs Theorem 720 portable digital converter-headphone amp will take your sound to the next level.
Coming out of France, Devialet mixes drop dead gorgeous design with a full complement of advanced tech features.
The Audioquest Dragonfly USB DAC has just been reduced to $99 online; readers can also get a good deal on the Logitech UE Smart Radio.
The Arcam rPac offers PC and Mac users an affordable upgrade to their onboard sound, complete with a dedicated headphone amplifier.
Play-Fi is the newest home streaming standard and could give Sonos and AirPlay a run for their money, promising wider manufacturer support and hi-res playback.