I haven’t gotten to test A to C without a hub on the MBP for obvious reasons, but I did test A to C on my primary Windows computer without any issues.

Thanks for the reply, so far i have been keeping the buffer at 64 and im not getting any pops or cracks now. Did have a couple times where it did not appear in logic though and had to unplug it and plug it back in a bunch of times. Also this only happened once so far it decided not to play audio out of my right monitor and then after repowered it was back to normal. So strange lol I appreciate the info everyone thank you.

Its really strange im in logic and if i use my soft synths with my aurturia or ssl interface they work with no problems on the mt48 im getting frozen notes on all my soft synths and its randomly not triggering some notes. Other than that it’s a great piece of gear. The reason I mention thunderbolt is because the quantum 2632 uses thunderbolt and the performance on there is flawless. Thanks for your info, much appreciated.

Not a deal breaker, but right now I can't control the interface from the computer at all. Whenever I try to launch the remote controller from my computer, I get this message: "unable to retrieve IP address from hostname: MT48_000772.local"

Anyone experienced this or know how to solve? I contacted Neumann support, which seems to be pretty confusingly organized and I'm not even sure I was able to contact the correct department.

I have this problem if I don't restart the computer with the MT-48 connected and on. My MT-48 is connected to a thunderbolt dock with USB ports, so if I just plug the computer into that, it won't connect until I restart the computer.

Thanks for the suggestion - I tried restarting the computer with the MT 48 connected/on twice but that didn't work. But I think I just figured it out, and it's kind of complicated: I recently ran the MA1 room correction software to re-calibrate my KH80s and after that is when I couldn't connect anymore. If you're using an MT48 you're required to use the ethernet port on that device to connect to the monitors, using your computer's ethernet port apparently won't work. But doing that adds a Network connection in settings for the Mt48, and it seems like that confuses the software when it goes looking for the device later on. So I went into my Mac's Network settings and it still had the MT48 as a possible ethernet port (that just wasn't connected at the moment). So I deleted that port and restarted the Mac and now it works. Just in case this helps anyone else.

Random. I still think it's likely to be a driver issue- something is glitching. TB is "better" of course, but USB should be perfectly capable with smaller IO - the Orion does 32 channels over USB of course, and Apogee Symphony can do 16 happily too.

This is interesting - your post got me wondering why the MT-48 shows up on my MacBook as an ethernet interface. So I connected the ethernet port to a LAN switch (to my home network), and connected the USB cable straight into the Mac, then disabled wi-fi on the Mac. And guess what - I still have internet. So the MT-48 is actually a "NIC" (Network Interface Card), but it shows up as only 100baseT on my system. I tried to force it to connect at 1000baseT (gigabit) but it fails. If this were designed to connect to a Ravenna system, you'd think that it would be at least gigabit. So that's a design decision that I don't understand.

The Neumann website stills says that AES67, VAD and MAD support isn’t fully realised on the MT-48. MacOS is probably just loading some generic NIC support.

I’ve really been curious about the MT48, but was out off when I learnt the drivers were made by a third party. I can’t remember the name off the top of my head - starts with a ‘T’ I think, but as soon as I saw it mentioned it send ripples of panic down my spine. I’ve encountered them in the past and they were horrendous. Antelope used them for most of their early USB interfaces. They were so bad Sweetwater dropped Antelope entirely.

Hi all, I’m considering buying MT 48 to use with my M2 Mac. How does the quality compare with these other interfaces that I’m considering?

RME Babyface
RME MADIface XT
Merging HAPI

I’ve included the last one because I’d like some way to avoid having to also buy a MixPre-10 for location recording - it’s big enough that I’m thinking I might as well just get a big interface to lug around….

Larry

The Merging Anubis does not work (well or at all) over Gigabit ethernet. I would assume the same for the MT48

You mean it's meant to work over 100baseT? Ravenna's own site says:
"RAVENNA works on Fast Ethernet speed and above, but Gigabit Ethernet is recommended for node and backbone connectivity. "

Apologies I misspoke - it is 10Gigabit Ethernet that doesn't work properly

I recommend you break you system into 2:

1. get an RME (pcie card if possible but RME USB is solid too) for the interface to daw and
2. go digitally via MADI (or ADAT, AES) to HAPI or another good converter or device.

I use MH ULN8 Mk4 via RME MADI FX pcie card and its awesome. But there are many more options when you have the stable low latency driver part covered with RME. You still can connect via USB/Ethernet to these other devices to control their DSP/routing etc on the same machine.

Thanks very much for your suggestion. I'm considering doing RME Babyface + OctaMic. It's less portable than I wanted (I often travel by train), but the quality seems great. Do you have experience with cheaper interfaces like Focusrite Scarlett+? Is OctaMic a bit step up from Scarlett+ (or MixPre-6 II)?

Thanks again,
Larry

RME is quality sound and stable across the board. I never got on with Babyface personally but no qualms over the sound. I think its better quality compared to the Scarlett series stuff I've heard but that is anecdotal, I don't have the specs to back it up...

The MT48 + Hapi combo would be superior sound quality than all the other options listed, but also considerably more expensive. The Hapi base model before you add any cards is already more than any of these options and the cards run several thousand bucks each sooo.... yeah a great option if you can afford it but honestly in another league from the RME and Focusrite options

It looks like some may have pin pointed pops and crackling issues to using USB hubs. I’m not a MT48 user, but USB hubs can cause issues with any USB interface, so try connecting directly to the computer.

So Random and your probably right. I’m glad I haven’t had any pops or crackling now which haven’t come back since i put it to 64 wich makes no sense to me cause usually its the other way around which also brings back your point that it must be some weird driver thing.. Its a great unit though and im really loving the headphone amp. Thanks for the reply

i guess one of the qu to ask is, how many record input channels do you need, and also how many outputs

I needed 24 outs so got 3x Metric Halo ULN8. Only one of them needs a MADI card.

Before that I was using a fireface 800 and Lavry AD10 and DA10 as the analog io for my RME Hammerfall pcie cards. Hence still 2 part but using ADAT. In that era I was happy with the FF800 as aux io to the Lavrys. Not as good as the Lavrys but I think you'll be happy with the Babyface if the portability is of concern. If its to remain in a studio I still would go an RME PCIe card or MADIface, RayDAT to octomic. Then later you can upgrade your ADDA and keep the RME didgital interface

What does it mean when the menu bar item for the MT-48 (on Mac OS) is red? Seems to me it is normally black or white?

I believe it means there is a firmware update available.

That's what I thought, but "Show Available Updates" says its up to date.

While searching for solutions I came up with this post.
I just purchased new the Neumann MT48 yesterday and already have issues. And I am pissed off, as I paid near 2000€ for it here in Europe.

The thing is that I am using a relative old but powerful PC with a Xeon Intel chip, a Nvidia graphics card, NVme storage and plenty RAM, absolutely capable of handeling most projects I do (I was using temporarily a Behringer Air XR 18 as a interface).

The PC is new to me, as I bought it few weeks ago, but was running smoothly with Reaper. It runs on Windows 10 (and cannot upgrade to Windows 11 as it states).

The thing is that yesterday, after plugging the Neumann MT48 and installing the drivers (I already had the Asio4all drivers installed as they were mandatory to use with the Behringer), all the audio I was trying to playback from the PC, whether it be YouTube videos/music or my guitars recorded in Reaper, had random pops and crackles all the time, no matter what I did.

I went through the Neumann website, uninstalled everything, reinstalled all again (even the newest Asio4all driver), and pops and crackles again. I went through the Neumann's guide to configure Reaper specifically, and even did all the recomendations to optimize my PC as their website stated. And got nothing out of it but the same pops and crackles as before.

I just tried disconnecting the USB wifi port, put the thing on plane mode, disabled Realtek, connected the MT48 to another USB port (even tried both 2.0 and 3.0), but still clearly audible pops and crackles even when playing back a damn YouTube video.

Tried with my other computer, a Windows 11 Intel (that I was using previously as my main one) and as it appeared (cause I did not try to reproduce a whole album, as I did not had the mood nor the time to do so), it did smoothly well: no pops, no crackles within or outside Reaper. Even with the famous usb-c to usb-a cable.

But back to my main PC for music, it still does it and as I want the PC and interface for recording professional guitars, I cannot work with it.

This week, as my schedule allows me, I'll register the product and try to get in touch with the Neumann support, altough I am a bit hopeless tbh...

I am no tech savy guy by any means, but cmon, paying for a 2k interface I think (imho) I shouldnt be troubleshooting like that on day 1.

I am hopeless btw as it appears that it does not go well specifically with my main PC that has Windows 10 (altough the Neumann's website states that it's compatible with such OS).

Well, I just wanted to share my experience, and if anyone has any idea, may it be welcome.

Cheers,

Sounds like it might not be anything to do with the Neumann interface? The fact that its fine on W11 means that the config on the W10 PC needs work.

Yep, I kind of pointed that out on my comment. And this week I'll try my best to make it work.

But, as a non engineer & non developer of any kind, just as a consumer, I think that if a product states compatibility with W10, it should not require me to start digging that deep into dpc latency, drivers, and whatnot (I already did all the optimizations for windows on Neumanns page). Just my humble opinion as a consumer. From a non expert POV I have the feeling of doing part of the merging-neumann developers job for a product not cheap at all. I mean, I am sure that there's a way of programming and developing code so that all that is taken into account so that the consumer doesnt have to go through all that. RME interfaces do not have that many issues with drivers, latency and whatnot in my (not super extense) experience, as an instance.

I'll try my best and try to keep you updated as well.

Cheers!

I think it is unlikely that the difference is in Win10 vs. Win11. But either way, you can probably upgrade to Win11 for an experiment if you follow the various guides on the 'net about how to install Win11 even if it says the PC isn't up to it. Make a backup so you can go back.

I could imagine that your USB ports are somehow not liking the interface. You could try a PCIe USB card to test that theory.

You could also use a Linux Live non-install just to see whether it gets the pops on your hardware. That would allow you to narrow it down to hard- or software issues.

What mainboard do you have, exactly?

Check that you have synced the clocks. I myself have set the clock to be controlled by the DAW. This way, your MT48 will always adapt to the sample rate of the project you are working on.

That's kind of the problem with PCs; not everything can be trouble-shooted (trouble-shot?!). There's the possibility there's a piece of hardware causing issues; IRQ interrupts, are they even a thing still? and that sort of thing. It could be your other PC just doesn't have the same hardware causing issues.

It's a pain, but also the reason you have to get your hands dirty sometimes.

Hi, I don’t know if you have resolved the issue. But this is a typical clock error / glitch that comes on the MT48 if the sample rate is not locked. And these noises do come out of the inputs. Have you connected the ADAT / SPDIF ? Is the clock showing green (locked ) or Yellow ? Do you have other interfaces simultaneously connected ?

I have found the opposite. PC's can be completely trouble-shot with serious technical info available on the net. Macs on the other hand ...