Replying to my own question if the A&S Mogwai SE good for the Tungsten.
I now have a Tungsten SS (waiting for the DS version to arrive) and I can confirm it does not drive it well. Volume is not the issue the problem is with the bass. Getting lots of distortion.
The Holo Bliss and Oor drive it and both sound great.
EDIT: Mogwai with KT88 and 5AR4 Tubes drives the Tunsgten much better.
My preferred amp is the Ferrum Oor.
Iām considering the Mogwai so good to know.
I may have a similar issue with my Cayin HA-1A MK2 driving my HE6se V2, so that doesnāt surprise me. Sometimes the sub-bass sounds a bit flatulent. It was worse until I upgraded the input tubes. I see that at least one person on Head-Fi thinks the Cayin drives the Tungsten sufficiently, but I have my doubts.
Since my Schiit Mjolnir 3 is also reportedly not able to drive the Tungsten sufficiently, I may not buy them myself. If I have to buy an expensive amp just for them, I might as well get a pair of estats and an energizer.
You going to use the MJ3 with the DS or SS version? If your DAC can adjust the voltage, you might be ok. 6v from my DAC to the MJ3 drives them pretty good. Tho I may just get a susvara again since theyāre a bit easier to drive.
I hadnāt decided but all of the reviewers I pay attention to reviewed the DD and the DD is the only one Iāve heard so far.
Yeah I read about increasing the input voltage as well. I donāt think the Bifrost 2/64 has that ability but I could put an active preamp in between, right?
Just wonderingā¦ Has anyone actually received a pair of Tungstens lately? I hear that a lot of people are waiting months and months. Whatās the actual wait time?
Check out their website for most current info:
Iām aware of their website but I am asking if thatās what people who ordered are actually experiencing.
Just received my DS. I was part of the first round of orders, took about 6 months. I expect later orders will turnaround faster as they gear up.
Can someone who understands amp specs tell me if my current MOTU M6 can drive this okayish?
If not, what about the any of them RME ADI2s can do it, like maybe the Pro? I use a USB Audio Interface for other purposes and am not that interested in a pure headphone amp.
Itās hard with the Motu M6 because there arenāt really any actual published specs of the headphone power output, even on Motuās own website.
From what I pulled from B&H, the M6 has a max output level of +12.5 dBu which would be 3.266 volts. However, thatās also not rated against any sort of impedance power spec so without an actual test of the output power, itās hard to say what that number actually means.
But just based on the above, the M6 wouldnāt be able to deliver enough juice to the Tungsten. It is pretty common for the headphone amp outputs on interfaces to have middling output power.
Iām going to tag @GoldenSound here just in case everything I said above is hogwash and you can ignore me.
Youāll be thrashing it pretty hard (which rarely does things to improve performance) ā¦ and thatāll only get you to 96 dB/SPL, which means an average listening level of, at most, 76 dB/SBL if you want 20 dB for peaks.
So, Iād say, ānoā, unless you listen at lower levels and/or to less dynamic music.
Likewise, the RME ADI-2 FAC fs, is going to be pushing its limits to hit a 100 dB/SPL peak, or 80 dB/SPL with 20 dB headroom.
For those looking for a pretty reasonable cost amp to drive their Tungsten, Schiitās price reduction for the Ragnarok 2 at $1,000 could be pretty compelling, not to mention that itās an integrated amp/all-in-one (if you wish) as wellā¦
Link says Ragnarok 1, itās for the 2ā¦
I ordered a pair in late Decemberā¦ still waiting!
Yep the Motu stuff has an ok built in amp for general use but absolutely wouldnāt be enough for Tungsten.
Unfortunately Tungsten really does need some of the highest output @ 300 Ohm amps you can get on the market, and possibly speaker amps. (Note: this is nothing to do with 32 Ohm power, you can basically ignore that number when looking at amps for tungsten, the important number is maximum voltage output which can be determined from power at 300 Ohm)
A few days ago I was able to hook up a friendās Tungsten to my Schiit Mjolnir 3. I listen to a lot of prog metal so Iām probably pushing 85db avg if not more like 90db avg. To my ears the Mjolnir 3 was able to get loud enough. Granted the volume knob was close to max at about 4 oāclock BUT also I was using an Apple Lightning dongle as my DAC. Donāt judge me - there were reasons. 
I feel like Iāll never have a conclusive answer until I have a chance to A/B the Mjolnir 3 against a more powerful amp. Or maybe audition the Tungsten for a few days through my Mjolnir 3 fed from my Bifrost 2/64. Meanwhile the Ragnarok 2 could sell out at any time.
The Rag is a hell of a deal, especially if you want to drive speakers off the same chain.
If you are considering another amp aside from Ragnarok 2 specifically for the Tungsten, one option could be a Flux Labs Mentor, or FA-10 Limited used if you can find one.
I was reading through the Mentor thread on head-fi, and supposedly Ryan tried out the Mentor with the Tungsten and liked the combo. Or at least said it was a very good option for the Tungsten.
I decided to keep my FA-10 Limited for when I get the Tungsten I ordered. Itās an interesting amp, does a number of things very well. And the fact that it is ridiculously powerful fits the bill for Tungsten. Like Schiit, their stuff punches way above its weight class, so to speak.
Another option to considerā¦
Unfortunately, due to the war in Ukraine, it has not been possible to buy from Flux Labs for quite some time now. 
The guys from RebelAmp have gone to the USA to continue production there.
FluxLabs is still based in Ukraine and probably has other worries at the moment.
Quite true, though I guess as recently as mid May some Mentors shipped out.
God only knows what theyāre dealing with, truly nightmarish. And Flux is/was in Kharkiv. I can only hope they are still OKā¦
slightly surprised that more people donāt mention the amps from Bursonā¦ several of their amps can handle the Tungsten very well and if your on the Burson email they have demo sales where you can get one of the offerings at 50% off in some casesā¦
They drive the Tungsten and have plenty of headroomā¦ and you get the chance for op amp rolling to further enhance the sound sig of the chainā¦