BERKLEY AUDIO DESIGNS ALPHA DAC SERIES 1 – CONSIGNMENT

Condition: Good.

Includes: Original Remote, No box.

Finish: Silver facia, black chassis.

Overview

Berkeley Audio Design was founded by alumni of Pacific Microsonics, developer of the HDCD process and the Pacific Microsonics Model Two. When designing the Model Two they became familiar with the amaz ing fidelity of 24-bit Model Two recordings made at 176.4kHz and 19 2kHz sampling rates. The Berkeley Audio Design Alpha DAC was designed to bring that level of audio fidelity into the home with high resolution 24-bit recordings – a level of fidelity “ closer to the microphone feed” than even first generation open-reel analog tapes. The Alpha DAC also up-samples 44.1kHz CD’s almost 176.4kHz q uality and uses proprietary interpolation technology to provide the highest possible fidelity at all sampling rates from 32kHz to 19 2kHz . IR remote control of Alpha DAC preamplifier functions including volume and balance is provided to allow direct connection to power amplifiers.

Specifications

Digital Section (44.1kHz/16-bit) Result Units/Comment Output Voltage 1.6335 / 1.6334 volts (Left Ch/ Right Ch) Frequency Response See Graph dB (20Hz – 20kHz) Channel Separation 98dB / 98dB / 94dB dB at 16Hz / 1kHz / 20kHz THD+N 0.01% @ 1kHz @ 0dBFS Channel Balance 0.00053dB @ 1kHz @ 0dBFS Channel Phase 0.03 / 0.03 / 0.59 degrees at 16Hz / 1kHz / 20kHz Group Delay +5.71 / –5.43 degrees (1–20kHz / 20–1kHz) Signal-to-Noise Ratio (No Pre-emph) 78 / 92 dB (unweighted/weighted) De-Emphasis Error 0.007 / 0.034 / 0.003 at 1kHz / 4kHz / 16kHz Linearity Error @ –60.00dB / –70.00dB 0.04 / 0.01 dB (Test Signal Not Dithered) Linearity Error @ –80.59dB / –85.24dB 0.10 / 0.12 dB (Test Signal Not Dithered) Linearity Error @ –89.46dB / –91.24dB 0.15 / 0.08 dB (Test Signal Not Dithered) Linearity Error @ –80.70dB / –90.31dB 0.04 / 0.14 dB (Test Signal Dithered) Power Consumption N-A / 23.96 watts (Standby / On) Mains Voltage During Testing 246 – 252 volts (Minimum – Maximum) Digital Section (AES-17 48kHz/24-Bit) Result Units/Comment Out of Band Spurious Components –109.346dB Suppression of Imaging Components –109.570dB (Worst Case) Level Dependent Logarithmic Gain –0.0dB Intermodulation Distortion (1) –77.717dB 18kHz/20kHz 1:1 Ratio Intermodulation Distortion (2) –62.530dB 41Hz/7993Hz 4:1 Ratio Low Level Noise Modulation +4.025dB Worst Case Idle Channel Noise –105.230dB CCIR-RMS weighting Signal-to-Noise Ratio –107.157dB CCIR-RMS weighting Power Line Products –100.753dB 50Hz Non-Linear Interchannel Crosstalk (a) –91.963dB 3kHz (2nd-order ref 17kHz/20kHz) Non-Linear Interchannel Crosstalk (b) –101.624dB 6kHz (3rd-order ref 17kHz/20kHz) Non-Linear Interchannel Crosstalk (c) –104.631dB 10.040kHz (2nd re 40Hz/10kHz) Non-Linear Interchannel Crosstalk (d) 100.752dB 10.080kHz (3rd re 40Hz/10kHz) Absolute Phase Inverting Normally, but is switchable