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I looked into the BLA mod for my MOTU 828mkII but after I read the info on a lot of their mods and had a chance to roll it around and read what some very experienced design people said, I decided to give it a pass.
If the BLA mod helped your sound, great, sounds like it was worth it to you.
But some of the things they do, replacing audio opamps with video-purpsoed opamps, for instance... that just don't make no sense to this ol' cowboy. Why extend your HF handling in one small section of your rig far, far above audibility, when it risks the introduction of RF interference and other troubles? It doesn't surprise me that people that some of these mods are noticeably noisy.
Professional converters are designed by experienced digital design engineers, typically with many years of highly specific technical education (not to mention advanced academic degrees) and often as not decades of digital design experience.
SOME modders are hobbyists with soldering irons and a couple of IC catalogs who took a page out of the audiophile book and decided to offer "upgrade mods" with little or no justifiable technical rationale behind their mods, counting on many recording "engineers' " technical naivete and tendancy to buy into the latest buzz in order to market their putative improvements.
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