Berkeley Audio Design Alpha 1 with Alpha USB

Selling my Berkeley Alpha 1 DAC (silver face) with a Berkeley Alpha USB (black). I keep my stuff in good condition. These are not pristine but everything about them works and works well. I used the Alpha 1 volume control as my preamp. If you use one digital source, you may find that you like the sound better without a preamplifier.
I played so much Grateful Dead through this device. Careful when you touch them, it could trigger a flashback.

Alpha USB:

SPECIFICATIONS

• Input: High Speed USB 2.0 connection - type B receptacle

• Output: switch selected, coaxial SPDIF - BNC, 75Ω or balanced AES type - XLR, 110Ω

• Supported sampling rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz

• Supported word lengths: up to 24 bit

• Supported operating systems: Apple Macintosh, Microsoft Windows and Linux

• Enclosure dimensions: 2.3”H X 10.5”W x 5”D, 2.55”H including feet

• Mains power: 100 or 120 or 240 VAC, 50/60 Hz, IEC power input connector

• Power consumption: 3 Watts line, 1.5 Watts USB, designed for continuous operation 

  Alpha DAC:

  
  

  Input Sampling Rate

  
  

  32 kHz to 192 kHz

  
  
  
  

  Input Word Length

  
  

  24 bit

  
  
  
  

  Balanced Analog Outputs (two channel stereo)

  
  

  XLR, pin 2 positive

  
  
  
  

  Unbalanced Analog Outputs (two channel stereo)

  
  

  RCA

  
  
  
  

  Digital Inputs

  
  

  AES - XLR, 110 Ω
  
  SPDIF - BNC, 75 Ω Toslink – Toslink optical BADA encrypted - RJ-45

  
  
  
  

  HDCD Decoding

  
  

  Detects 16 bit flag at 44.1 kHz, or 24 bit flag at all sampling rates

  
  
  
  

  Balanced Analog Output Level

  
  

  +18 dBu maximum into ≥ 5kΩ load +12 dBu or lower recommended

  
  
  
  

  Unbalanced AnalogOutput Level

  
  

  3.25 Vrms maximum into ≥ 5kΩ load 1.6 Vrms or lower recommended

  
  
  
  

  Level & Balance Control

  
  

  0.1 dB/step with 0.05 dB/step L/R level trim, 60 dB range