đŸ”¶ HarmonicDyne x Zeos ERIS

OK, Now to burn in 5 sets for SoCal Canjam. I will be sharing a table with Mimic Audio at this upcoming September 28-29th event. 25 more should be arriving at the hotel to be sold directly. Another 7-8 for friends and family, the rest for whomever I feel can best promo them in the real world, Streamers, Podcast hosts, DJs, smaller Youtubers. Huge thanks to Linsoul for arranging so many for me to dick around with. I might even reserve one to mod/tune further. Super-Eris if you will.

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The only thing you could do is tune one to make the OCD measurement freaks happy. Otherwise don’t waste your time. It’s perfectly good as is for the rest of the people.

Linsoul were super dope at Canjam UK, that’s were I got to hear ERIS (your table was way too busy) and Thieaudio’s swag :raised_hands: to them :smiley:

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But what if I made a Bassy version
 As opposed to the normal, normal bass version everyone can buy? Eh? EH?

Wait
 You were there? Did you say hello and I missed it?

Yes and l did say hello right at the start of the first day as it opened, you liked the Baby Metal tee :smile:

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More bass would likely just cause severe driver distortortion which would then f up everything else, unless you’re talking about precived bass, like, reducing the upper mid & treble.

Just checking in. Must have been the brain damage. (Had to be a burn in time thing
) Not sure what the hours are at now, lost track. I let them go for 24 hours before I started using them but I guess that wasn’t enough. But they sound incredible out of the UM2, quarter inch jack is fine. Haven’t bothered with anything else for over a week now. Not sure I will ever again lol. They have the PERFECT amount of bass IMO. <3

(While somehow being absurdly clear
?)

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What’s the best way to put stickers on the headphones? Do you just get a large sticker and then use an x-acto knife to cut around the edges?

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I didn’t track my burn in time exactly. I do know that the recommended 50 hours is not nearly enough. I’d guess 100 hours is needed.

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I have done some testing now that I have so many new units here. Turns out the PAD break-in is almost more important than the driver. I have a whole thing where I weighed the BRAND new pads, 8 sets at between 31-32 grams
 The units I have been using for months weigh in at 33 grams (2 sets) and I did a test spraying some Neutrogena body oil on them
 45 minutes sit and then tumble dry in my dryer. I got the weight up to 34 grams artificially and smashed the pads around and swapping Brand new, Actually old and now Artificial pads I am clearly hearing what the pad density change is doing.

So what all this means is
 Wear your headphones more. They will sound better naturally after the driver breaks in and the pad starts changing
 SCIENCE

I measured the glass at 2-7/8" and used a circle cutter on my sticker material. You can do it with a compass and then draw the line and use scissors to cut it out. Getting it on the glass is the harder part
 I must also warn you if you have paper backed stickers. Removing them is going to leave residue and probably some paper. My stickers are vinyl.

Found a great match up for every headphone I’ve got, including the Eris, which I’m listening to now.
The NAD C165BEE has an awesome headamp in it. Note that it makes 600ohm DT990 better than I’ve ever heard them before with the volume at 3 o’clock. Stunning to me. The Eris start rocking about 9 o’clock. 11 o’clock is at the level of Dolby Vision Theater loud while maintaining dynamic control. I’m using 2009 Star Trek in 4K as my SQ testing material.
I got my C165BEE on Reverb. They’re not made anymore unfortunately.

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I’ve done it. Dual mono Xduoo TA-26. Currently the only headphones I have with 3.5 TRS input are the Eris. However it’s working & sounds rather good. All of the right signal is going to 1 of the TA26. All of the left signal is going to the other TA26. Both channels are driven on each amp, therefore giving double the power to any given headphone. I’m using the NAD as the preamp. A single 3.5 TRS to 6.35 TRS runs from each amp to each earcup of the Eris. So far so good.

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You have certainly done something sir. I’m not sure how you’re getting two channel down to one in each ear cup. I’d be careful you’re not grounding something since the input on Eris should just be using two pole. I was doing a similar setup recently to run tungsten.

This is the Achilles speaker amp. Eight watts per channel. One entire monoblock per side. I used the Eris straight on and it was a little bit noisy but then I use the adapter box and it was better. Not sure if Eris needs this much tube. But tungsten does.

Cracked open eight brand new units I’m taking 5 to California this weekend. Was doing driver and pad break in stuff. Then I gave each one of these between 20 and 40 minutes on my head. Driver variation has been consistent. One unit on the end I thought sounded a little off but it could have just been me having a bad playlist experience since I wasn’t listening to the same songs. I’ll give them another round today.

Just a note for perspective buyers. They seem to have increased the resistance on the rotation on the yolk but it’s varying from unity unit and sometimes even from left to right I’m sure it’ll all work out once you’ve used them for a while but brand new out of the box it was something I noticed.

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I just thought of something. Yes both sides of the tubes are driven with input signal, but without mod to the wiring of the headphone’s 3.5 input jack, corresponding to +/-, then the driver in the headphone is only getting signal from one side of the tube, right? Crap. I’m not sure.

Watch with Subtitles. If anyone wants to do a better translation than YT Auto-Translate. I would love to see it.

I like how you responded so politely.
I would understand the setup
 if they XDUOO TA-26 actually were Mono amps
 and or would be connected “left - right” per amp but since they are both connected?

Even if the both amps would be used
 they would still only use “one channel” actually to send left and right signal headphones
 second channels doing nothing or playing audio to audio void ? That would be the same thing as using one amp with left and right. Internally they probably are not using left+right power and sending that to one channel only
ish?
My head hurts
 and just cannot find any technical or real world benefit from this setup. There has to be something wrong or i need a actual drawn diagram of connections to figure this out.

Like you mentioned. "You have certainly done something sir. I’m not sure how you’re getting two channel down to one in each "

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Just a reminder, everyone following this topic, you’ll be able to hear Eris and actually purchase a few sets at a discount this weekend @ Southern California Canjam
 I’ll be located at the mimic booth. with a ton of sets on demo. See you there.

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Also This

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finally after 3 weeks of waiting

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A bit late to the party here but I wanted to throw in my $0.03 (adjusted for inflation) as I’m one of the few that owns more than one pair of Eris. I have been able to directly compare a brand new set vs a well broken in set (SN 135 (broken in) vs 356 (less than 1 hour)). I ended up with 3 sets because I’m impatient and Linsoul told me my order wasn’t going to ship for weeks, lol. Anyway


I agree 100% with Z, the Eris requires both driver burn-in and pad break-in. With both done it is a noticeable improvement (bass tightens up, driver feels like it has more control and the treble calms down a bit, soundstage opens up just a tad), with one or the other there are very slight chaanges. It’s hard for me to tell which is more important (pads vs driver) but both together make this the second headphone I’ve experienced that had real burn-in (first was my ZMF Atticus).

I’ll also echo that these drivers seem to be indestructible against overpowering. I have put a ridiculous amount of volume through these and have yet to feel like the drivers are in danger. It’s hard to make them bottom out before hurting your ear drums. You can get an absolutely ludicrous amount of bass shake from these. Whoever said this is like a THX theater experience on your head is spot on. My audio tastes line up pretty well with Z’s and these headphones are just about perfect for me. I still have plenty of other options when I want a different flavor but these are going to be my go-to for most stuff from here out. I already bought an extra pair of Eris pads (they came before my Eris actually) so I’m playing with those pads on other headphones since they’re so damn comfy. Can confirm the Eris pads on the Mondrop Para is a great option. The Eris pads do not sync well with my T50rp based headphones (I’m slightly obsessed with the Open Alphas currently, printing a bunch of variants and trying different tunings) but most everything else I’ve tried them on they’ve either been good or great.

So yeah, IMO Z knocked it out of the park with this one. I’ll eventually gift my second set to a friend once I’m done testing them. These things are just awesome and fun. Don’t give a flying fuck about the frequency response graph.

If any of you sadists want more bass try the True/XBass on an Ifi Zen Dac (I have the V2) or some deep leather pads (or both
). It’s absolutely insane.




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