The DACPort is a high-end amplifier for your high-end headphones. It’s a USB digital-to-analogue converter that bypasses your audio card completely and does all the audio heavy lifting itself. The makers claim it has superior clock jitter-control to ensure all those digital samples (all the yway up to 96kHz) arrive at the right time to give your ears a holiday. Works with 24 and 16 bit audio and has 6.5mm output plus a 3.5mm adapter and a volume control. US$500
DACport is a reference-quality, stereo 24-bit / 96kHz digital to analog converter so good that it reveals the subtle detail in your music. Featuring CEntrance’s advanced AdaptiWave™ USB technology, JitterGuard™ clock management system, super-clean dual internal power supplies, analog volume control, and an audiophile headphone amplifier, DACport redefines the category of portable headphone amplifiers.