dCS Vivaldi DAC- $35,999
Lampizator Horizon - $50,000
Nagra HD X - $65,000
Infigo Method 4 - $35,000
Wadax Reference - $221,495
Aries Cerat Kassandra Ref - $23,375
SW1X DAC III Balanced w/ upgraded mains transformers - $16,550
MSB Select II - $84,500
(Please let me know if I got any of these prices wrong.)
I am pleased that Patrick chose to include SW1X in his test of uber high end DACs and appreciate the yeoman-ly effort involved. To be correct, the SW1X DAC provided was a DAC III Balanced with upgraded mains transformers, not a DAC I as listed. At $16,500 it was the least expensive of any of the DACs tested. It is entirely appropriate for the DAC III Balanced to be tested against any and all DACs, which, I think it safe to say, given the price and pedigree of the DACs included in the test, this sampling represented.
SW1X DACs go to 24/96 and do not play DSD. The preferred input is SPDIF, though a USB to SPDIF conversion board with tube master clock is an additional option. Source, cabling and isolation will be absolutely critical in determining the outcome. In this case, the use of an inferior cable and the passing of the signal through other components necessarily affected what Patrick and Ron heard and reported on. Given that the setup for the DAC III Balanced differed radically from the others, no reliable conclusions can be drawn about it from the test.
In fairness to all of the DACs tested, consitency of source and cabling would have yielded more accurate results, however I fully appreciate that Patrick did the best he could with what he had available. I should also mention that the DAC III Balanced provided was of a previous generation. The latest version is significantly more resolving and transparent due to refinements of the circuit.
A customer of mine in San Francisco purchased an SW1X DAC V Special ($95,000, with pure silver wound output transformers) that uses number 45 triode signal output tubes. It is the most glorious piece of equipment I have had the pleasure of interacting with on an intimate basis. The customer originally owned a dCS stack consisting of Vivaldi (not Apex) DAC, Clock and Upsampler. We provided an SW1X DAC II Standard for him to test (currently $3225). He was able to output both SPDIF and AES/EBU simultaneously from his Aurender 20 SE and could switch between the two outputs in real time. His conclusion? "The dCS was slightly warmer and slightly louder, but otherwise they are the same."
I have invited Patrick to visit when he is in the S.F. Bay Area to get another perspective on SW1X, and I invite all forum members to come hear the DAC III Balanced here in a more optimized setting with our Lotus Group Granada Loudspeaker and to hear the DAC V Special with Wilson Alexx Vs. Please get in touch. Thanks.