非常受到好評的美國Berkeley Audio Designs的Alpha DAC將要推出更新的版本Series 2了，其比現有的版本使用了更新的時鐘系統與隔離技術，在外觀方面與原來的Alpha DAC都一樣，只有在後方會有Series 2的標籤。根據Berkeley Audio Designs的Michael Ritter表示，新的Alpha DAC Series 2在結像精準度上大為提升，聲音更為純淨，解析也更好，在第1代已經這麼出色下，第2代更是讓人期待，更好的消息是因為全世界有足夠的數量，現在2代銀跟黑的價格都為USD 4,995 (上一代黑色較貴)。值得一提的是Berkeley Alpha USB介面目前仍只有黑色可選。Series 2預計兩個星期後左右可開始出貨，2011年6月後的Series 1可花USD 350升級。
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Berkeley Audio Design Alpha DAC Series 2
PRODUCT HIGHLIGHTS
• The Alpha DAC Series 2 employs new clocking and isolation technologies that provide enhanced imaging precision, timbral purity and resolution.
•Unequalled interpolation technology up-samples 44.1kHz CD’s to provide almost 176.4kHz quality and produces superb fidelity at all sampling rates from 32kHz to 192kHz
•IR remote control of all functions including volume and balance allows direct connection to power amplifiers
•Advanced input signal jitter rejection
•BADA encrypted input allows future support of HDMI and other DRM formats
CONTROLS & INDICATORS
•Input selects AES, SPDIF, Toslink or BADA inputs
•Lock LED indicates input signal lock
•HDCD LED indicates HDCD code detected
•Phase sets absolute phase
•Invert LED indicates absolute phase inverted
•3 digit LED display of Stereo/L/R attenuation, Sampling Rate and Filter type
•± controls set attenuation level and select Filter type
•Mode selects Stereo/L/R attenuation, Sampling Rate and Filter type display modes
•Dim selects multiple display brightness levels
SPECIFICATIONS
•Input sampling rate: 32kHz to 192kHz
•Input word length: 24-bit
•Two channel analog stereo outputs: XLR balanced and RCA unbalanced
•Digital Inputs: AES - Single XLR 110Ω, SPDIF - BNC 75Ω, Toslink – Optical, BADA encrypted - RJ-45
•HDCD decoding detects 16-bit flag at 44.1kHz or 24-bit flag at all sampling rates
•Multiple digital filter options
•Multiple units can be combined for multi-channel/surround reproduction
•Balanced analog output level: +18dBu maximum, +12dBu or lower recommended
•Unbalanced analog output level: 3.25Vrms maximum, 2Vrms or lower recommended
•Digital attenuation and balance control: 0.1dB/step with .05dB/step trim, 60dB range
•Frequency response at ≥ 88.2kHz sampling rates: ± 0.1dB from < 0.1Hz to 35 kHz, - 3dB at 59kHz for 176.4kHz and 192kHz sampling rates
•Distortion at recommended levels: all products ≤ -120dBFS
•THD+N at maximum level: < -110dBFS
•Firmware field upgradeable through signal inputs
•Enclosure dimensions: 1.75”H X 16.5”W x 10.4”D, 19” rack mount option
•Mains power: 100/120/240VAC, 50/60Hz, IEC power input connector
•Power consumption: 25W, designed for continuous operation
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