Wavelength Audio Australia NZ - USB DACs, Valve DACs, Computer Audio
usbdacs

All of the products here use our
Streamlength Asynchronous USB code that I developed. These are all USB DACS they do NOT have antiquated SPDIF inputs like other dacs. These are optimized and superior to the older SPDIF technology.

 


Before we get to the products it is
probably a good idea to address the
differing technology associated with
the DAC’s in these products. In the
Crimson and the Cosecant there are
DAC modules. These circuit boards
have DIN connectors for which they
can be plugged into the mother board
of the product and take on a different
personality. The Firmware that runs
the USB controller (TAS1020B) of the
product is located on the DAC module
and therefore changes the way the
DAC and the computer talk to each
other. Settings like bit size (i.e. 16 or
24 bits) and sample rate (i.e. 44.1K,
48K, 88.2K and 96K) will be
communicated to the computer. All
the DAC’s on this page use
Asynchronous USB mode
. Each DAC
module has the required low jitter
master clock(s) that all the signals
will be based on, with matching
discrete low noise regulation for the
best results. None of these DACs
use any type of operational amplifiers
(opamps) in their design. The DAC
module is the only Solid State portion
of the overall DAC. The output stage
of all but the Proton are tube based
and the key design element which
is responsible for their overall sound.
In the Proton, close respect in regard
to component usage and filter settings makes this dac approach its tube siblings.

 

 

Crimson USB DAC

 

Crimson USB DAC with
upgradable dac module and DHT outputs:

 

The Crimson is unique in that it is completely programable from the USB side of the equation. Therefore the code for this process is housed on
the dac module

 

Cosecant USB DAC v3

 

Cosecant USB DAC v3 (now with ASYNC mode) with 6GM8/ECC86 tube transformer output and upgradable dac modules:

 

The Cosecant is where it all started @ CES 2004. At first I did not think this echnology would work....

 

Brick USB DAC v2

 

Brick USB DAC v2 (now with ASYNC mode) with 12AU7/ ECC82 reactor follower output:

 

I first thought of the Brick as a way to bring greater attention to the idea of computer audio. It turned out to be much more than that as indicated in Art Dudley’s Listening #33.

 

Proton 24/96 USB DAC

 

Proton 24/96 USB DAC with headphone output:

 

The Proton is for desktops,
home audio, travel whatever! The idea is to make a dac that could run without a power supply and still sound wonderful. The idea is simple: we can use the USB power .

 

Transcendental 16/44.1 DAC Module
This is the basis of the Brick and modules are available for the Crimson and Cosecant. Basically Transcendental
in math terms means irrational numbers. The reason I used this name was because this technology is really an
irrational approach that yields really good results. I have used this name for these DACs since the late 80’s. These
DACs incorporate the TDA1543N2 (select top 5%) DAC chips with passive I/V using Shinko Tantulum resistors in a
configuration that does not use analog or digital filters. Some people call these NOS DACs or what I call zero DACs.
The data input is the data output without any up/oversampling or other manipulation, which seems to make for a very
analog presentation.

 

Note on 24 bit Computer DACs: The computer will convert all Red Book 16 bit data to 24 bits by padding, adding 0’s
to the most significant 8 bits of the 24 bit sample. This is the same way it works on CD/DVDplayers and other DACs.

 

Numerator 24/96 DAC Module

Keeping with the math analogy the Numerator is what we would call part of the rational number. This DAC module will work at 44.1k, 48k, 88.2k and 96k sampling rates at 24 bits. The Numerator uses a High Performance Wolfson
DAC to output the analog signal. Special regulators are done for all the analog and digital sections to make this DAC
a stellar performer. Available for Cosecant (AU$350) and Crimson (AU$700) only. Either the Crimson or the Cosecant can be ordered with either the Numerator or Transcendental at no extra cost.

 

Denominator Sabre DAC Module
I am working on the new details of the Denominator. Since ESS has a new 32 bit dac we are investigating a new
design to be available in the near future. For the Crimson only at this time.

 

Options: Silver or Copper output transformers for the Crimson, Crimson Balanced and Cosecant. Wood Options:
Cherry, Maple and Walnut are included with the listed price. We do sometimes have exotic wood on hand and
prices typically range from AU$350 for Cosecant and AU$500 for Crimson. Some woods because they are rare will cost
more. You can ask about custom wood for any product and we will see if we can supply it. Specifications and
options will change as things change, stay tune to the news page for these.

 

If you have the need for a custom DAC module or have something interesting that I might want to try please
contact me. If you have a version 2 Cosecant it will need to be upgraded to a version 3 before modules can be ordered.