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Description: The Cosecant v3 is the third incarnation of this device. It can be classified as a classic DAC but it has only a single USB input and is optimized for working with computers. It is beautifully made and stands apart from the Brick, Cambridge Audio or even Benchmark machines. It has similar dimensions to the Brick but there is a tube sticking out, a 6GM8 double triode (ECC86 here from General Electric) covered by an acrylic plate. Changing the tube is hence more difficult but not a very big issue as it is not done every day.


The top and bottom plate are made from clear-anodized brushed aluminum, the front uses wood and all remaining panels are black varnished steel. The unit is supported on three Carbon fiber feet. On the back we have splendid RCA sockets with the analog output, a B-type USB input, a power inlet socket for the external power supply and a green LED. The power supply is mounted in a small but very solid aluminum enclosure. The umbilical is very thin and makes no lasting impression. To increase the tube's life span, the digital circuits remain powered on all the time but the analog section is switched on only when signal is present at the USB port. A small white LED confirms when this happens.

Inside we have two PCBs - the main one with the TAS1020B USB controller and a smaller one with the Wolfson Microelectronics WM8716 converter. Wavelength modified the controller to work in asynchronous mode, meaning the signal is clocked not by the computer but by an internal clock that's mounted near the controller. This minimized jitter. There are not many parts on the PCBs but those present are very high-quality metalized resistors, Wima polypropylene capacitors and Rubycon Black Gate electrolytics. At the output we have the tube coupled to the RCAs via transformers behind which sit chokes.
opinia @ highfidelity.pl

Wavelength Audio website
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