Considered one of the best DACs on the market. See Absolute Sound and Computer Audiophile reviews. I just purchased it in late December, so it is only 11 months old. I have put less than 100 hours on it, so it's basically brand new with original box, manual and remote. I have a great rating and have been an Audiophile for many years, so please no low ball offers and no wasting time.
I have confirmed that this unit is eligible for the version 2 upgrade and the MQA upgrade when available later this year.
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A few quotes from the reviews:
The Berkeley Audio Design Alpha DAC Reference Series is a DAC
for the ages. Delicacy, detail, and unparalleled transparency are hallmarks of
the RS. Reproducing soft yet present background instruments as clearly as the
lead guitar is something only the Alpha DAC RS has done in my system. This DAC
is capable of hooking the listener in to hours long listening sessions even at
the expense of getting other work done. I know of no DAC available today that
can reproduce Redbook CD content as well as the Alpha DAC RS. Period. If I
could afford it and my job allowed it, the Alpha DAC RS is the only DAC I'd use
for the foreseeable future.
The Absolute Sound
The Berkeley Alpha DAC Reference Series is not only the absolute
state of the art in digital-to-analog conversion, it also goes far beyond even
this superlative to redefine what’s possible in digital playback. This is a
landmark product in that it crosses a threshold of sound quality and musical
expressiveness that renders moot the idea that digital can only aspire to mimic
analog rather than offer its own set of virtues. And breakthrough the Alpha
Reference is. I’m confident in saying that the Alpha Reference will be
remembered decades from now as a turning point in digital audio sound quality.
Berkeley Audio Reference DAC Specifications
Input sampling rate: 32kHz to 192kHz / 24-bit
Ultra low phase noise Precision Clocking at 44.1kHz, 48kHz,
88.2kHz, 96kHz, 176.4kHz and 192kHz sampling rates ± 100 ppm
Digital Inputs: AES - XLR, 110Ω; SPDIF1 - BNC, 75Ω; SPDIF2 -
BNC, 75Ω; TOSLINK - Toslink optical connector
Dimensions: HxWxD 3.5" x 17.5" x 12.5", 30 lbs.