One Berkeley Audio Design Alpha USB Interface in a fantastic condition. It 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. It has an internal switch for selecting 120 or 230 volts IEC power input. Serial number is 1291. Retail price is 2.000 euro. Please check our other items. Free shipping included!