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Dan Clark Audio Aeon 2 Closed, Aeon 2 Noire and Stealth

Jimbob54

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Thank you. Output impedance of the DX320 is .03, I am told. So suppose that means there wouldn’t any real issue driving lower ohm drivers…
I dont think the output impedance of the DAP was the issue. Its ability to deliver enough current to low impedance drivers might be though.
 

tifune

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Thank you. Output impedance of the DX320 is .03, I am told. So suppose that means there wouldn’t any real issue driving lower ohm drivers…

Sorry, I'm talking about power output. You can see an example on the amp I use for Stealth:


Notice power output drops as you go further below 48 ohm. For my listening habits, I feel around 2W @ 23ohm is required for proper sub-bass response. Amir touched on this in the G5 review, which I believe is 1.1W at 23ohm; I expect the DX320 would have similar output to G5. As to whether that matters to you, only you can decide. DCA recommends 500mW @ 23 ohm
 
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For those that have the Aeon 2 open, I want to ask about the comfort

How does it feel? Is it too heavy? Tight? does the lower section of the cup push in hard?

Planning on getting one but worry about it. My head fit 650 well but not with Beyer type, tried t50/he4xx but they are too heavy
I just got my aeon2 noire. We have 4 HD650 in our studio, never really satisfied with them.

the Noire is more comfortable, it feels bigger, not heavier. I dont have big ears, but the hd650 cups are only just big enough. When going out for a recording, I actually need to shave my ears, or I will hear hair rustling against the pads, making me wonder if I have digital clicks on a recording !

Returning to the HD650 after listening to the Noire makes it feel and sound like a toy (the Senn). of course it does not help that the hd650 foam parts simply disappear every 1-2 years. It is the main reason I never looked at a 800.

The DCA is - first impression - a lot closer to our reference monitoring system.
 

staticV3

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The DCA is - first impression - a lot closer to our reference monitoring system.
Sure makes me wonder how close the original SRH440 gets for 6% the cost of a Noire (here in Europe).

440 / Noire
Screenshot_20221028-220804_Drive.png / Screenshot_20221028-220718_Drive.png
 

don'ttrustauthority

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Can the iBasso dx160 handle the Noire? What is the impedance?
 

staticV3

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Can the iBasso dx160 handle the Noire? What is the impedance?
The Noire has an impedance of 13Ω.
At 13Ω, the DX160 can output 1.35Vrms before clipping, via its Bal output:
Screenshot_20221230-102254.jpg
Measurements are from ReferenceAudioAnalyzer, here.

According to Dan Clark Audio, 1.35Vrms is enough to push the Noire to 113.5dB SPL Peak (Very loud).

Unfortunately there are no 3rd party, independent measurements of the Noire's sensitivity.
 

paudio

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Got a set of used Noire cans but there seems to be a large channel imbalance. Left side is 3-6db lower. Tested cables (0.4ohm), tested drivers (both 13ohm), checked pad seal, checked that ports aren't plugged by covering them and listening for change and tried different sources. Every source I had to reduce right side by 3-6db.

Does anyone have any any other ideas before I send these off to DCA to get repaired? Are there active electronic components in the cup, connectors or anything else I could check first?

Cheers
 

JanesJr1

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Got a set of used Noire cans but there seems to be a large channel imbalance. Left side is 3-6db lower. Tested cables (0.4ohm), tested drivers (both 13ohm), checked pad seal, checked that ports aren't plugged by covering them and listening for change and tried different sources. Every source I had to reduce right side by 3-6db.

Does anyone have any any other ideas before I send these off to DCA to get repaired? Are there active electronic components in the cup, connectors or anything else I could check first?

Cheers
I don't have the hands-on chops to help with troubleshooting, but you might call ahead to Dan Clark Audio. I have found them accessible and helpful in providing phone support in the past.

I have the Noire, and am disappointed to hear of your experience, because DCA supposedly now tests and matches the levels and FR curves to a pretty tight tolerance for each Noire before it goes out the door, and even if yours are used, it's not nice to hear that it's possible. (Though the early production runs may not have had the same careful quality control, which they implemented -- to my best recollection -- after the Noire had been launched.)
 

paudio

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I don't have the hands-on chops to help with troubleshooting, but you might call ahead to Dan Clark Audio. I have found them accessible and helpful in providing phone support in the past.

I have the Noire, and am disappointed to hear of your experience, because DCA supposedly now tests and matches the levels and FR curves to a pretty tight tolerance for each Noire before it goes out the door, and even if yours are used, it's not nice to hear that it's possible. (Though the early production runs may not have had the same careful quality control, which they implemented -- to my best recollection -- after the Noire had been launched.)
I have a RMA number already but it's costly to ship it from Canada. I am guessing something must be just wrong with the driver. DCA support wasn't sure what else I could check either.
 
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