Having passed the 100 hours of loop time, this Wyred 4 Sound DAC is in a totally different league than my previous Eastern Electric DAC Plus. Every part of the spectrum is improved, absolutely everything. Starting with bass, wow! there is much more bass material than I ever thought I had on all those CD's. My Swans towers now deliver truly deep, very powerful and tight bass, down deep, way deep.
Compared to the EE, the soundstage has now widen by several feet, all while maintaining very precise instrument localisation. If there was one part that I particularly liked about the EE's tube output (with the upgraded Psvane tube) was it's warm and natural midrange. Voices simply took on such a natural "you are there" timber, more so than the SS output. Well, the W4S matches that slightly laid back midrange, while never ever veiling the voices or instruments within those frequencies.
After the settling-in time, high frequencies have now also perfectly integrated with the other ranges. Defined, precise, airy but never fatiguing, even on the many average quality masterings of classic rock material.
If it was easy to comment on the fact that the EE had it's own sound signature (which helped or hurt, depending on the recording), I can describe the W4S has being much, much more neutral in it's delivery. Only the midrange tends to have a tube like backdrop to it's signature, as the lows and highs really extend far, but without adding or taking anything away (to my ears). Put on an ordinary recording and this DAC will squeeze absolutely every note out of it, while keeping things well under control. Now, put on a very well mastered disk and this unit will make them sound AS GOOD as many of the SACD's I own.
What more can I say? This DAC cost me as much as my Sony XCD5400ES player or my Marantz AV, something it seems I would of never considered paying not too long ago, when all it does is, well convert the signal. But in the end, my F2.2 speakers deserved such a magnificent unit to make them truly shine to their highest level. System synergy and resolution taken into account, YMMV of course.