http://www.nuforce.com/hp/products/iconudac2/ NuForce uDAC-2TM
| MSRP $129
NuForce uDAC-2 is a high-performance USB Digital Audio Converter (DAC) that connects your personal computer's audio with your home stereo, desktop sound system, or headphones. The quality and versatility of the uDAC-2's performance belies its diminutive size. With its extensive power supply, filtering capabilities and charge-pump circuit as a foundation, the uDAC-2 processes incoming data via a USB audio receiver. A D/A converter chip then translates the data to a two-volt analog signal.The NuForce uDAC-2's performance equals or exceeds that of a great many audiophile CD players. The unit's exemplary flexibility -- analog RCA, digital coaxial, and high-performance headphone outputs -- is bound to satisfy the needs of the most critical music lover.
As a step beyond the successful uDAC, the uDAC-2 boasts a highly linear TOCOS volume control for improved channel tracking at low listening levels, in addition to 24bit/96kHz USB DAC and an improved headphone amp. Existing uDAC customers will be able to order upgrade to uDAC-2 (visit this page for information in October, 2010 )
Features
* Discrete USB audio receiver and D/A converter
* Coaxial S/PDIF output (turn off volume control to activate)
* Double jitter-reduction mechanism at data level and at oversampling filter stage
* High voltage 2V analog output
* A highly linear TOCOS volume control for improved channel tracking at low listening levels.
* No capacitors in any of the audio signal paths
* Low power consumption; USB self-powered
* USB powered, no external power supply required
* Headphones impedance between 16 ohm to 300 ohm are suitable for use with Icon uDAC-2
