Indeed, being that they are actual engineers or capable DIYers or both, many Head-Fiers are especially adept and knowledgeable about clock types, chip types, jitter and DIY modding of said converters. And it is by dint of this superiorly knowledgeable, technically advanced band of merry men that I came to know of and ultimately to purchase, the Gustard U12 XMOS USB converter.
Cheap, Chinese and cheerful at around $180 list, original Head-Fi poster rb2013 (probably not his real name) said it was the best of several top-flight converters he had tried, including well known and much pricier converters such as the fabled Audiophilleo 2, several of John Kenny’s, M2Tech Hiface Evo and the Musiland 3.0.
Hmmm, I thought while reading his posts (yes, I actually thought “hmmm”), I own several such well-regarded converters, all pricier than that one, and I'd enjoyed music served up through them via my Mac Mini for years now, but admittedly, never to the extent I used to with superb CD players such as my dearly departed Lectors and Naims.
Which brings us back to USB converters. So, as I was saying (writing), I bought the Gustard U12 32-bit XMOS converter on the recommendation of rb2013 (among others), and it was… excellent! It was definitely as advertised. It had mproved bass and dynamics, over and above my Audiophilleo, and a bit more “relaxed” sounding. Then rb2013 threw a curveball at his Head-Fi faithful, he had an affair with another converter he said greatly bettered the U12, which in turn, had bettered a lot of the “high priced” spread. He then decided to boot the U12 and move in with said new converter on a more permanent basis.
That new converter was the equally cheerful, equally Chinese (though not equally cheap at $230 USD) Melodious Audio MX-U8. Similarly capable in terms of high sample rate conversion and employing the highly regarded up-to-date programmable XMOS multicore microcontroller topology but with a more robust power supply, improved circuit isolation and perhaps more accurate digital clocks, the MX-U8 sez rb2013 was better; punchier, more detailed, weightier in the bass, bigger soundstage, the works. So I bought one. And it was! Somewhat. Not as warm/pleasant (?) as the Gustard, but slightly more detailed, forward and punchier and with a bit more expansive stage. The Gustard was good. Very good. I could actually still see preferring it in certain systems, but my preference perhaps leaned toward the not-night-and-day-better MX-U8.
In fact, I even considered making this review a Head-Fi forum post so I could thank rb2013 (what if that is his real name?) for getting me going on this journey toward my own eventual USB “conversion” and be even more lazy about Binging… errr… Yahooing (See? Neither quite work as verbs) all the technical particulars in the service of just trumpeting the Yellowtec's merits unencumbered by any need for anything approaching enjoyable, well punctuated prose...