You know, I just want to make a post targeting anyone that may be shying away from spending the money on a pair of headphones like the Atrium because everywhere you turn all you see and hear are people saying to get amazing ("the best") SQ out of them you must have some ungodly expensive tube amp (not to say those won't provide good SQ, because I am sure they will and do - but I am willing to bet a vast majority of people either have enough coin for one or the other, or maybe not enough for either - hell ,tbh, I count my blessings everyday that I am well off enough to have purchased a pair of Atriums, but as of this moment, I am not well off enough to spend another good chunk of money on a new tube amp - and we definitely can't forget some of the tubes these expensive amps use, in some cases, they're becoming more expensive than the amps themselves!

).
Now, the headphones already cost a small fortune, and the thought of having to spend
another small fortune can certainly make anyone cringe and retreat never to look back.
And maybe you are like me - you already own a few mid level sources (Geshelli J2 DAC, THX 789, etc), and also maybe one that is arguably the most loved,
and the most hated tube amps of all time, the good ol' Darkvoice. Now, maybe you are also like me and land on the "love" side of that argument in regards to the DV, however, you doubt that it has what it takes to make you grin from ear to ear for countless hours while listening to music with the Atriums, because isn't that what it is all about? And if that is not going to be achievable, well then, forget about it, right?
Well, I am here to tell you, as I was once one of those individuals with doubts that my humble sources would get me to the place of pure audio bliss, you need not worry!
Geshelli J2 -> DV with 6SN7 and it's triode variants (7N7, 6F8G, 6C8G) which can be used with adapters gets me to that place of enjoyment, where I will literally listen to music from 9am-7pm, with normal day job interruptions in between. And again, not to say that those more expensive sources wouldn't be even more enjoyable, but the point is you can definitely find that level of enjoyment from these headphones with a humble setup such as mine. And who knows, maybe one day you will have the means to pick up one of those legendary tube amps, and if that day comes, guess what, you're all set to go with your pair of ZMF cans.
Now, I want to get into something that some may find beneficial (especially people that are strapped for cash), and actually where I find the most enjoyment with the Atriums, and it's about those costly tubes, which are just getting even more costly as time goes on. Well, we've all heard of the known tubes which can be used with adapters in the 6SN7 socket such as the 6C5, 6J5, 6J7, 6CG7, etc. etc., but there are undiscovered/unmentioned gems out there that are selling for pennies on the dollar in mint, NIB/NOS condition, compared to most of these, and definitely compared to any 6SN7 variant,
especially in NIB/NOS mint condition, they are not even in the same ballpark.
One such triode gem that search results for this entire forum come up completely blank is the 6R7. You have to use these in dual config with the proper adapter, which is simply the dual 7193 to 6SN7 adapter, connecting only the grid top cap, and leaving the anode tc disconnected. They also come in the '6R7-G' config with the ST glass, however, I have found that the metal envelopes sound spectacular, and just as good, and you can get true NOS/NIB JAN RCA 6R7 tubes for about $6 a piece from one of the best tube vendors out there, which is mentioned on this forum all the time. I am refraining from mentioning the specific vendor, as I do not want this to be seen as an advertisement, and only valuable information for people looking for great tubes they can stock up on for great/reasonable prices still, which can bring a whole new light to their current tube amp to be used with the Atriums.
Now, the 6R7 is
not the only undiscovered and completely unmentioned gem out there that will work in your 6SN7 sockets, which also cost significantly less in NIB/NOS mint conditions. There are tubes that easily outshine any 6SN7, its variants, or any popular/known compatible tubes, and with a little bit of research and time spent looking into pinouts + datasheets you can definitely find them!
Finally, there are also undiscovered pentode gems which need to be strapped as triodes that sound exceptional. Now, with the pentodes strapped as triodes they usually have a low mu rating, so with just my J2 -> DV only, they can lack strength/body with the Atriums - well, I solved this quite easily adding my THX 789 to the chain. When using my pentodes in the 6SN7 socket, the chain is as follows ... J2 -> THX 789 -> DV ... I have the THX going to the DV from the 6.35mm SE out which splits into RCA jacks going into the RCA input of the DV. With this setup, the Atriums imo are so so good - this
really opens up the soundstage and imaging to a exceptional place.
6U7G is one of these pentodes you can find for $3-$5 for NIB/NOS JAN and commercial types, which is mentioned a total of a single time as far as I can tell on head-fi. To use this in the 6SN7 socket, you can simply use an adapter already on the market, the EL32 -> 6SN7 adapter. Again, there are more pentodes in this same ballpark of SQ and availability!
To wrap things up, the point is you can get more than enough enjoyment from Atriums with a humble setup, and you do not need to spend another small fortune on a new tube amp + the tubes to go along with it, that's nonsense! And if you are willing to put in a bit of time and research into discovering those unmentioned/undiscovered gems (tubes) out there for a tube amp you might already own, I'm confident you will find even more enjoyment out of them!
I do hope some of this information helps some of you out there!