Ok, it's been a fair bit of time since I posted my first impressions of the Eikons, and I have a lot to add.
To be blunt: the Schiit Lyr (original) and Chord Mojo are not suitable to drive the Eikons. They both sound
great, but “great” sells the Eikons short. I needed to hear them out of an OTL tube amp, so ordered a Valhalla 2.
That drives the Eikons properly, despite an over-hot treble (with stock Voskhod Rockets).
And oh my lord do they sound good! It's a little hot, but this is the best treble I've heard on headphones bar none! It sounds like hyperbole, but the only headphones I've heard* that are in the same ballpark are Stax SR2020 electrostats I owned years ago (which were flawed in many ways the Eikons are not). It's silky, extended, airy, clean, refined, detailed, and natural. Headphones basically never get treble right - but the Eikons, driven by the Valhalla, do!
With both the Mojo and the Lyr, the treble on the Eikon is present, smooth, and inoffensive (which is better than most headphones manage!) but uneven, a bit grainy, and unextended up high. This corresponds with what I’ve heard about Sennheiser 600/650s - that with most amps they sound grainy and veiled up top but with an OTL tube amp, the veil is lifted - so I’m guessing it’s an electrical/impedance matching thing, where the OTL couples properly with the high-impedance coils? But who knows. ¯\_(ツ)_/¯
With the Chord Mojo
The Mojo is interesting. At home, straight out of my MacBook Pro and driving be Eikons, it sounded a little congested and messy in the mids & treble. Busy tracks were hard to listen to, and I had to ride the volume a lot. At work, where I feed it through an iFi iPower USB, all the mess is gone, and it sounds great! So make sure you’re feeding your Mojo a high-quality USB signal.
And it really does work well with the Eikons - better than the Lyr. It’s very open, detailed, clear, and tonally colorful. Until I heard the Valhalla, the Mojo was my pick to drive them.
With the Schiit Lyr
This really kicks the Eikons up the arse, with tons of power and drive (more so than the Mojo). It also adds a layer of creamy smoothness that might appeal to some, but I felt it bleaches tones and smooths over texture. Bass is also woolier/muddier than the Mojo. Very enjoyable though.
With Amperex Orange Globes, there’s too much warmth - sounds just right with the Voskhod Rockets.
Vs MrSpeakers Alpha Primes
At this point, I was sort of torn because my beloved Alpha Primes (driven by the Mojo) still did a number of things better than the Eikons. They were less “sexy”, without that glorious ZMF mid tone, and they were more closed-in and much less dynamic. But they were more transparent, more resolved (better “plankton”?), had better tonal color - and better treble.
In short, the Primes were weaker in some areas than the Eikons, but what they did they did without flaws. Whereas the Eikons kicked ass and sounded great, but had some clear flaws - mainly in the treble & upper mids.
Enter Valhalla
So then I bought a Valhalla (2) to try. And now i know my Alpha Primes are history.
It really is transformational with the Eikons. On the Valhalla, these are far and away the best headphones I’ve ever heard.
And it’s not just the treble. On the Valhalla, the Eikons’ soundstage is huge - with the right track played loud, it really consumes your sensory universe in a wonderful way.
Mid tones are gloriously rich and colorful. Overall it’s refined and completely grainless. And there’s an effortless that’s so hard to find with headphones.
That said it isn’t a flawless combo. The Valhalla has a lean balance and although the treble is glorious, it is a little too hot. It’s so sweet and beautiful though that it almost never seems to offend (and I’m the kind of guy who gets easily offended by a hot treble!)
Interestingly, while rolling in the Amperex OGs does improve the balance, I still prefer the Rockets. The OGs just aren’t as clean or even-handed, especially in the bass. I definitely will be hunting for the perfect warmer-tilted tubes though (not looking forward to the expense!)
I also am now itching to try other OTL amps. I can’t quite justify a $1000+ amp like a Decware just yet (still trying to explain to my wife why I have several ~$1000 headphones in the house!) but I want to try some other flavors of budget OTLs. Bottlehead Crack is top of my list, though maybe some chi-fi would be fun?
Vs My Home Speaker Rig
I’m a speakers guy first and foremost, and have an all-tube, all-Audio Note system at home (DAC3->Oto Phono SE Sig->AN-E LX HE) that I
love. No headphones I’ve heard have ever come close. The Eikons+Valhalla are the closest I’ve heard.
Obviously it’s unfair comparing a $500 DAC plus a $350 amp to an $8,000+ combo (it’s less unfair comparing a $1400 headphone to $9,000 speakers though!) But with that incredible OTL treble, the Eikons aren’t completely embarrassed by the big rig!
I need to try my DAC3 into the Valhalla+Eikons...
On the Physical Design
I love how the Eikons look, but I have some quibbles.
The pads are a little too narrow for my ears, contacting my lobes in places. One of them is also a bit loose and often swivels out of position and has to be fixed. The sizing adjustment is also too loose and has to be readjusted pretty much every time I put them on. And I can’t see a way to tighten it (unlike the Fostex band on the Alpha Primes, which can be tightened with a screwdriver). The pads are very comfortable but get a little hot (again, unlike the Alpha Primes). I also don’t like how the cups swivel freely all the way round. When you pick them up from a surface, or place them down, you have to be careful that a cup doesn’t swivel down and bang on the surface, which would surely scuff the varnish of the cups or paint of the metal fittings.
And they are heavy (I have camphor cups). You do notice the weight on your neck after a while. Doesn’t bother me much, though the clamping force is a bit weak given the weight - it’s easy to turn your head too fast and have the cups slip out of place.
But these are niggles.
And Then I Bought Atticus
Before the Valhalla arrived, I felt the Eikons were so close to being great but not quite - so I wanted to hear the Atticus in case they got closer to greatness.
They arrived yesterday and I’ve been playing. (They’re a demo pair of Zach’s so I figure burn-in isn’t a concern. Cherry cups.) It’s been fascinating.
First impression out of the Valhalla: yikes, these are nowhere near as good as the Eikons! Mids and bass were uneven and the sound was quite closed-in and congested. Unlike the Eikons, they really couldn’t hold a groove! Vocals and guitars sounded great but everything else was a bit of a mess! Disappointing to say the least!
Then I tried driving them straight out of the Mojo... aha! Magic! Now they sound tight, coherent, even-handed - in short, really good! Tonal balance is great, and it’s nice to have a break from the hot treble of the Eikon+Valhalla! Vocals and mid-forward instruments sound phenomenal! Sax especially sounds sexy af.
They kick like a mule in the bass and have great groove.
Now the treble via the Mojo is excellent, but not at the level of the Eikon+Valhalla. It’s more like the Alpha Primes - detailed, clean, clear, but lacking a bit of sweetness and air.
The soundstage is huge and enveloping - but not as huge as the Eikons.
And there’s a thickness to the mids and midbass that can sound great with a lot of tracks but becomes a little wearing on others (dense mixes, mainly).
So for now, I still prefer the Eikons. But it’s only been 24 hours.
(I'd also say that if I hadn't heard the Eikons, I would be very happy with the Atticus!)
Next step is to try the Atticus with my Lyr (at work) - should be interesting. And I’m thinking I’ll take both the Eikon and Atticus to Audio46 (a few blocks from the office, in midtown Manhattan) and try them both with whatever amps they’ve got on demo…
I’m
really curious what amps people have found synergize best with Atticus? Given they seem to like solid state, but are high-impedance… what works best?
I’ll report back once I’ve had a chance to get to know the Atticus better.
Dunc
P.S. - Zach has been great at every step of my indecisive journey - I really appreciate it!
*Disclaimer: I haven't heard a lot of modern high-end headphones, but have been on a headphone journey for many years. I’ve owned: Senn 495, 600, 650, 25 II-1, Denon D5K, AKG Q701, K550, the Stax 2020s, MrSpeakers Alpha Dog, Alpha Prime, Audeze EL-8C, ZMF Purple Hearts. I’ve heard many more, and have spent quality time with the likes of: MrSpeakers Ether C Flow, Aeon, Beyer DT-880s, AKG 812s, Oppo PM-3, Shure 1540, Senn Momentums, B&Ws, HifiMans, Grados (though not the high-end)...