Drop-in upgrade to CS3310 volume control

I'm surprised that searches here and audio asylum make no mention of the Burr Brown PGA2311 chip that's been available for as much as a year now. It's a drop-in replacement to the 10-year-old Crystal CS3310 volume controller chip used in many fine preamps of the past 8 years. Chip design moves forward so it's no surprise a better-sounding version would come from Burr Brown.

I just put a pair into my Sonic Frontiers Line 1 SE (it's fully balanced thus requiring two chips) and the results were a noticeable improvement, perhaps the best $11 (each) you could spend. At least Sonic Frontiers makes it easy as the chips are socketed and it took less than 5 minutes to swap them. So for all you Line 1/2/3 owners out there it's a no-brainer. I can't say if all the other preamps that use the 3310 have it socketed or soldered, or if you'll hear the same improvements from it that I did.

I heard a greater sense of presence and a bit more detail. And, notably, a wider deeper soundstage. Kinda like upgrading to a much better interconnect from the same mfg, but a whole lot cheaper! I ordered from Digi-Key, it's a normally stocked item.

Anybody know why this hasn't gotten any attention or reports until now? My thanks to Steve McCormack for bringing this to my attention during a discussion of my power amp upgrade. This new chip is the basis for his own RLD-1 preamp SMc Audio upgrades.
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I hate when the only response to my post is my own :-(
So your loss is my "gain"...

Just saw this... I'm thinking of trying this mod on my Line 1. Anything to add since your original post?

I tried this it worked pretty well, I noticed a lower noise floor...