Many thanks. I haven’t taken the plunge yet, but will report back when I do.
It also occurred to me that a Schitt SYS might work if I attached an RCA to 1/4” female TRS adapter to the RCA out and plugged my headphones into that. Can you foresee any issues with this approach?
Back to the initial request:
… and adding to your recent answer:
Am I deducing correctly you’d be connecting the headphone amp jack outs into the SYS? If that is so, I wouldn’t do that. A switcher is more appropriate here since it will break the circuit.
Note the Schiit SYS is just a variable resistor. It may work for line level signals but not for “headphone amp” levels – i.e., you won’t reach full attenuation depending on the gain settings in the amp. Not to mention both amps will always be connected. 
Start simple. Get a simple A/B box, and in event you are able to distinguish between the two amps (e.g.: op-amps topology), then you move to a A/B/C switcher and so on. E.g.:
https://www.amazon.com/Sescom-SES-IPOD-AB-Stereo-Player-Switch/dp/B005TE7GP4
With the little box above you can connect two headphone amp jacks, where only one signal path is active at al times.
Cheers.
I use one of these and love it.
The biggest distinction is that all four outputs are live all the time so you don’t have to toggle back and forth between amps. Really great when you’ve got multiple people listening.
I had bad luck with live splitters in the past. The worst were analog video devices connected to old CRT TVs. The unused live lines darkened and added noise to the signal. I’ve recently been unhappy with the noise resulting from daisy-chaining a DAC to two amps, so I stick with switches.
If it’s not an issue for you, then enjoy.
Heyho,
I’m new to the forum and I’m here 'cause I saw a review (Headphone Show) on YouTube for the Sony WH-1000XM4s and it was the only review I found stating, the sound quality was actually pretty bad. And now I am hoping to find like-minded people who can maybe assist me in my quest to find a nice Bluetooth headphone with a reasonably flat frequency curve that I can also use in the studio (I am a producer).
My price range is 500$ to 600$ max (I’d appreciate to pay less, though :P). Up until now I have loved my Sony MDR-1As. They’re quite old but I love them for their decent bass tightness and the well balanced mids & highs. As I already stated I had the XM4s here but absolutely hated them. They sound boomy in the bass, sloppy in the mids and are extremely harsh around 9-10kHz, which annoys me after 10min listening.
I’d use them on the go (I don’t care tooooo much about the size, though), don’t need noise canceling as I get headaches from the technology (I think my brain can’t handle the paradox of experiencing air pressure without actually perceiving a sound. seriously, it goes haywire xD). I’d love to use them in the studio, too. Mainly for tracking (not for mixing & mastering, I have studio monitors for that). But therefor it would be mandatory for them to be also used passive via cable. For Bluetooth codecs I’d appreciate at least aptx-HD. LDAC would be best, but since it’s Sony proprietary I don’t have high hopes to find set of headphones that’s suits my needs with that feature. But that’s okay.
I have two in mind, that could potentially be what I’m looking for:
I’m asking a lot. I know. But I am very sensitive to sound quality and while I don’t expect audiophile grade quality for on the go, I still can’t bear an overly “excited” frequency curve, bad imaging or distortion. As I stated, I loved the Sony MDR-1As, I hate the WH-1000-XM4s. Maybe some of you have experience with either or both of the headphones or even with the ones I have found to be potentially well suited to replace my MDR-1As. I’d love some guidance. I don’t by new gear all that often. My Sonys stayed for 6 years straight as my only pair & while I’ve heard different (and more expensive) open back studio headphones I still loved those for their great portability on the go and their superior sound quality in their price-range (around 170$ at the time). It seems to be hard to find something like this in the Bluetooth-category. But maybe some of you know some kind of hidden gem that’s hiding out there! I’d appreciate all the advice I can get! 
//Thiemo
do the headphones need bluetooth or are you open to something like the fiio btr5
Hmm. Good question. As a last resort: probably I’d be open for such a setup. But generally I’d prefer a completely wireless connection for on the go. However, if the sound quality I could achieve with a bluetooth DAC + a wired headphone is better for the same prize (or less) I’d consider that, especially if all the alternatives are unsatisfying to me. No good in buying a 500$ bluetooth headphone if I still don’t like the sound. ^^
The mobius are ridiculously good for what they are. (I own them). But you could pair a qudelix 5k with just about any easier to drive headphone that you like.
For those of you using the RebelAmp, what DAC are you pairing it with?
I just saw, that the Mobius actually support LDAC, which would be perfect, as my phone does, too. What is your experience of their battery life? Do they deliver the advertised 10+ hours?
No idea. I use usb while on webex and they recharge. I then d/c and use bluetooth for music and calls. So they get charge times during the day.
I have no idea what the charge level is. But I have never run out.
I find switching between usb and BT is easier.
I have a mobius review on here if you haven’t read it.
I wouldn’t stress about existence or lack of ldac. Like all BT protocols, it has flaws. I am not sure ldac can even deal with a mic. That’s one reason I plug in for webex. The mic and drivers get higher quality sound as mic drops you into a lower resolution SBC I think.
They really seem perfect for me. HOWEVER I heard reports that they actually have 42ms of latency even when connected via analog audio. Is that really the case? I can’t think of why that is. I imagine latency is introduced by the DSP-chip, but shouldn’t that be bypassed when plugging in through the analog connection?
I don’t game with them so latency is irrelevant. I thought the latency was BT based connection. USB and 3.5mm should be fine. But, again, not a thing I am concerned about.
The only thing that seems to be an issue sometimes is a perceived channel imbalance. I still haven’t figured it out as it is not all the time.
Also, the gaming features like 7.1 audio all need usb connection. I wouldn’t use a wireless headset for gaming. From any brand. Unless you mean candy crush. 
I don’t actually care about gaming either. It’s more about wanting to use them in the studio, too. And for tracking any kind of latency is an absolute no go… 
You would have to try it. I just put on music and listen.
The penrose may be a better option for you. It’s weird that there is a delay reported on the mobius even with the 3.5? I am not sure I fully believe that. But the penrose doesn’t have it. So, that’s probably the one for you.
I am attempting to find a closed back headphone that will make me want to use it more than my Dunu Zen and has minimal sound leakage.
I will not EQ. I do need to be able to drive them from some bluetooth amp sometimes. I am considering centrance hifi-m8 v2 for the harder to drive options below. Xduoo xd05 balanced may also be an option. Yes, I know there are bunches of you that will roll your eyes and say these headphones are silly driven from bluetooth on those amps. At some point I may add a desktop setup, but it’s not a now thing.
The list below is not exhaustive. Just what has floated to the top in my research. If you have other suggestions, please let me know.
I want to call out the stellia: It’s not “officially” in the list because I am trying to keep it sub $2k. The verite is, because if ZMF sound ends up being a good fit, I know that is what I will end up getting at the end of the day. The verite gets a pass currently, the stellia doesn’t. Feel free to try and change my mind on that.
LCD-XC would be on this list, but I have heard and it did not blow me away. It also had some vocal harshness. Despite that, it is the best over ear headphone I have heard (includes he6se, arya).
Obviously I am asking here because of the ZMF options, but I also thought many people here will have heard the other things in this list:
Aeon 2 Noire
LCD-2 closed
Celestee
Radiance
Eikon
Verite Closed
Denon *200
Sony Z1R
What do I like?
I want to call out the noire. It feels like it fits quite well on everything but bass impact. I do not believe I have heard a planar with elevated bass, but zero impact (the arya/sundara do not have much impact, but also have neutral bass). So, I am tempted to see if it works for me. (The Audeze Euclid was like this, and I liked it a lot, but twice the Zen to get a similar thing with less impact didn’t make sense. Also, the fit was horrible. And, oddly, it just got shouty when loud on the iDSD signature)
I find myself liking a clean engaging sound where bass is present. I tend to appreciate planar speed, but not planar impact. The ath-wp900 sounded loose, not bad, but loose and that didn’t help it’s bass situation. The Dunu Zen seemed both very fast (not planar levels, but close) with impactful articulate bass. Thus far, nothing I can pinpoint to treble areas has offended me or impressed me.
Anyone want to take a pot shot at the above mess with a recommendation?
Having only listened to the Aeon 2 Closed (not Noire) and Celestees, between the two I very much prefer the Celestees. I found the sound more immediate, more punchy, more vibrant. Folks who love the Aeons tell me, though, that after a burn-in period the Aeons come alive.