From Berkeley Audio website: The Alpha USB is an asynchronous High Speed USB to digital audio interface that extracts the highest possible audio quality from computer audio sources.
The Alpha USB features a High Speed USB 2.0 input data connection and switch selected audio output signal type – either coaxial SPDIF using a BNC connector or balanced AES using an XLR connector. Sampling rates up to 192 kHz and word lengths up to 24 bit are supported.
The Berkeley Audio Design Alpha USB is a breakthrough product that not only overcomes the limitations of the USB interface, but provides a state-of-the-art method of getting audio out of a computer.”
—Robert Harley, The Absolute Sound, Issue 214
After four months using the Alpha USB, in combination with the Alpha DAC Series 2, I’m continually astonished by its level of performance. In fact, the Alpha USB is so good I’ve yet to hear a better digital interface. Period.”
—Chris Connaker, The Computer Audiophile, March 2012
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