Berkeley Audio Design Alpha DAC Series 1 + MQA Upgrade

Description

"The original Alpha DAC was a groundbreaking product, both in absolute performance and in its spectacular value."
—Robert Harley, The Absolute Sound, February 2012
Controls & Indicators
:
Input
selects AES, SPDIF or Toslink 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
HDCD decoding detects 16-bit flag at 44.1kHz or 24-bit flag at all sampling rates
Multiple digital filter options
Balanced analog output level: +18dB maximum, +12dB 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 (internal switchable), IEC power input connector
Power consumption: 25W, designed for continuous operation