Well, I adjusted my power amp gain so that the max on my SU-8 is the max I'd ever listen to out of my system. It's nice to know I can max my DAC volume via the remote comfortably without sound degradation issues instead of keeping it below 30 (or 33, whatever it is) and fiddling with it.
Plus, since I bought it from Massdrop I didn't void my warranty because SMSL didn't offer one in the first place. Big contrast to Topping.. they outright said they'd cover their products no matter if you purchased it through Massdrop or not. I'll be going that route in the future despite the SU-8 being what I'd consider the better value. It sounds rather nice, really. If someone is able to get a V2 unit for $200 it's hard not to recommend based on the performance alone.
I did the same just with the max volume I'd listen to in the mid to upper 20's. I don't have my stereo set up as a weapon like some other forum members, so if something jacks the volume up, at least no one is getting "seriously injured".
I've had my own issues with Massdrop that makes me less than enthusiastic about them. Some of their practices seem extremely sketchy, like the no-warranty situation, charging regular shipping prices and shipping 3rd rate services that use USPS for last mile delivery, the issues with the SDAC + O2 QA failures, and not issuing my refund on a recieved return until I contacted them when I saw it had been delivered several days before. I've also gotten some good gear and deals from them as well, like my HD6XX, and some kitchen knives.
At this point, I'd rather spend a few extra dollars and buy from another vendor when available, and I'm always sure to purchase on my Amex for the extra protection when I do buy from them. I'd also avoid buying a first run of any of their branded gear, but that's probably true for most manufacturers (at least topping released a DX3 firmware update to address its issues).
The SU-8 fills a very specific niche for me: A DAC/Pre with remote that has balanced outs for my monitors and unbalanced for my sub. Its like it was made specifically for my living room. So once again, I find myself giving SMSL some extra slack on their QA for their excellent features and price/performance.