I emailed them yesterday And here is the response
Rest assured, our LPS-A6 is more than capable of powering up your external hard drive or SSD without any hiccups. However, I’d like to bring to your attention that connecting multiple external drives simultaneously might overload the LPS, potentially causing it to run hotter than usual.
So @dawkinsj is correct. No big deal. I have mine on order.
I’m looking forward to hearing your thoughts on this upgrade. I’m having a difficult time keeping my anticipation in check. Potentially this could bring what already is a pretty decent built in DAC up to something that one could take more seriously. Likewise, purely as a streamer maybe we might see SQ comparable to the high price brands. I can dream can’t I.
These designers and builders are very serious about what they bring to market. Look at the other lines…Jay’s Audio, LHY and Denafrips and others, most are highly regarded. I’m not worried about it and I feel it will work beyond expectations. If not I guess I’ll slash my own tires.
It is very interesting to me the quality of the companies bringing out power mods to this very new device. Very new as in less than one year old. My Grimm MU1 has two switch mode power supplies in it and I am not aware of anyone offering power upgrades for it. I believe there are a LOT of Grimm MU1’s out there. And it’s three years old I believe.
I think that is just due to a few things. How many MU1’s are out there and 2 how many of their owners armed going to crack them open to try something?
And the fact that they spent the money building it and know what they are doing.
I feel a streamer at this price had to put cheaper parts in it to make it to market at their target price. The sheer number of these selling opens the door for mods.
I had to open my Grimm MU1 when I got it. And I believe someone who buys an MU1 is probably more capable of modifying it than the masses who will buy an A6.
I do not WISH to modify my MU1!
I just know there is a lot of us out here.
Its the difference between consumer grade gear and true high quality gear.
Mom always said if you buy cheap stuff then you get cheap stuff.
Audiophile Junkie just did an interview with an amp manufacturer who’s power supplies are external and cost a cool $215k just for the PSU.
I’ll worry about that kind of gear another day. Not this one.
For sure. You don’t see many aftermarket PSU kits for Gryphon, Pass, dCs, or similar pieces either. Buy in the price range you are comfortable with and let it be. 
But the Grimm has not one but two switching power supplies! The horror!
It sounds excellent though
That’s probably one for the EE’s to argue about but best left alone by us mere Humans.
And you are right. If it sounds good why mess with it?
By less likely I meant when you buy something like that most are not expecting to have to crack it open to make improvements. Sure there will be a few but for 3rd party builders of mods its all about numbers. How many for how much can I sell at what profit. Just not in the same categories. Also what % improvement is expected. I would expect a decent % improvement for my $300. Not going to get that on MU1. I am not sure how much more you could squeeze out of that thing as its engineered properly out of the gate even though it uses 2 (gasp) SWMP.
I remember years ago I had a 2 channel Proceed amp I got pretty cheap. It was quite an upgrade for me at that point in my life. I wanted to replace the cheap binding posts on the back. So I bought some good WBT posts. Swapped them out and all it did is mess thing up. Friend bought is scope over and tons of noise. To this day dont know why that happened, but I ended up putting the stock ones on and kept old ones on. I guess my point is I feel the better the design the less I think people tend to want to even try. Your gear I would certainly put in that category. The Eversolo I would not. As good a “deal” as this thing is, the price point does not allow for the same quality of parts and leaves much room for improvement at small costs. Plus as many MU1 owners are out there its dwarfed by the number of owners of the Eversolo…
I’ve got to say I’ve never been one to open up a component- and void the warranty. The possibility of royally screwing up a functional piece of equipment is always at the back of my mind. I’m the kind of person who can make the simplest job into an all day nightmare. Can’t tell you how many times I’ve dropped a screw somewhere inaccessible and spent the day with flashlights and magnets on a string when working on my car. Many here consider the $1300 I spent on my ME chump change but for me it’s not. Eventually I might risk it but only after others report that the mod results in a significant sonic payoff.
I am too curious not to open things up. 
Open up is one thing, change is another.
Yes.
Few things are sacred. But I make certain I know there will be an improvement before changing anything.
Too many make changes for the sake of change. Often the original engineers had a clue as to what they were doing.
It would be something if hifi/high end companies started to offer the choice of properties and finishes car manufacturers do.
Their story will of course be that they’re already offering the best bang for the buck. However, given the after market upgrades…
So, where to put the bar for the best balance between SQ and cost?
We all know by now that black components sound better than silver components, and that red components usually sound better than black 
Gonna get one of those red components someday.
So re the multiple drives. I have a powered usb hub on the back of my a6
Not sure if this is viewed as ‘multiple drives’??