12

Jul

Berkeley Audio Design

Alpha DAC

Digital audio reproduction “closest to the microphone feed.”

From the inventors of HDCD and the designers of the Pacific Micronics Model One and Two.

PRODUCT HIGHLIGHTS:

  • Highest audio quality DAC
  • All distortion products below one part per million
  • Sophisticated interpolation algorithm provides superb fidelity at all sampling rates up 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
  • Designed by Pacific Microsonics Model One and Two design team

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
  • Setup stored in non-volatile flash ROM
  • Firmware field upgradeable through signal inputs
  • Enclosure dimensions: 1.75”H X 16.5”W x 10.4”D, 19” rack mount option
  • Mains voltage: 120/240VAC, 50/60Hz
  • Power consumption: 30W

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