MacBook Pro M1 low XLR input volume

Hello there. I have a 2021 MacBook Pro, Apple M1 Pro, running Tahoe 26.3. I do voiceover work from home, and when I used a USB mic, I didn't have any problems. But the quality was a bit lacking so I went the XLR route and bought a Shure SM7B, a Cloudlifter and a Vocaster, and suddenly I had a problem with the input volume being near zero. I ran a gazillion tests, switching out XLR cables, trying different setups, eventually replacing all my equipment. Now I have a Rode PodMic and a Scarlett 2i2, but still the volume levels are throttled near zero, unless I turn the gain up all the way...and the volume is better, but not great but now with the added background noise at such a level that I can hear a bird sneeze a block away.


After looking for answers online as to why this is happening, the only thing I came across were a couple of references to a bug that M1, M2, and M3 models have, where this throttling of input from an XLR source is the result. But I haven't found much about that other than those few references.


I'm wondering if any of you out there might know more about this bug, if it's true and what can be done? And if it's not true, has anyone else had this problem and how can one fix it? I've tried everything that I, Claude, and Gemini can think of. Nothing works. For now I'm just having to record with gain up to 100% and filter out the background with Noise Reduction, and just live with the results.


Any and all help will be greatly appreciated. Thanks much.

Posted on Feb 24, 2026 5:10 AM

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Posted on Feb 24, 2026 10:14 AM

Thinking out loud here ...


  • If you are using an XLR mic, make sure nothing is connected to any of the 1/4" jacks on the front & back of the 2i2.
  • Plug the USB cable from the 2i2 directly into your Mac (not via a USB hub).
  • Use a USB-C to USB-C cable. If you are using the USB-C to USB-A cable that came with the 2i2 with a USB-A to USB-C gender changer, replace them with a USB-C to USB-C cable
  • Try each of the USB ports on your MBPro.


If none of this solves the problem, I suggest contacting Focusrite support. There is an email form on that page.


I also found this article on the Focusrite support site that talks about low mic levels with the Scarlett:

I’m getting little or no signal from my microphone or mic-level equipment. It does mention the Rode PodMic and the SM7B as potential problems; they are both dynamic mics; see the section of the article about "Dynamic and condenser mic troubleshooting."






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Feb 24, 2026 10:14 AM in response to Lady_Imperatrix

Thinking out loud here ...


  • If you are using an XLR mic, make sure nothing is connected to any of the 1/4" jacks on the front & back of the 2i2.
  • Plug the USB cable from the 2i2 directly into your Mac (not via a USB hub).
  • Use a USB-C to USB-C cable. If you are using the USB-C to USB-A cable that came with the 2i2 with a USB-A to USB-C gender changer, replace them with a USB-C to USB-C cable
  • Try each of the USB ports on your MBPro.


If none of this solves the problem, I suggest contacting Focusrite support. There is an email form on that page.


I also found this article on the Focusrite support site that talks about low mic levels with the Scarlett:

I’m getting little or no signal from my microphone or mic-level equipment. It does mention the Rode PodMic and the SM7B as potential problems; they are both dynamic mics; see the section of the article about "Dynamic and condenser mic troubleshooting."






Feb 25, 2026 10:58 AM in response to Lady_Imperatrix

If it's down to the connection to the computer...

...are you sure the USB-C data cable you are using is high quality and capable of the speeds required?


Top-spec USB-C cables that are slightly older carry the USB SuperSpeed PLUS or USB SuperSpeed PLUS PLUS logo, and newer ones carry the USB-20 logo. (There are even higher-spec cables available, but they are for extreme special cases.)


To be avoided for 'real' data transmission are charge-only cables that only say 60W 100W or 240W and nothing about speeds. They work only at USB-2 speeds, very slow.

Feb 24, 2026 6:44 AM in response to Lady_Imperatrix

There are 2 related gain controls for the 2i2. One is the channel gain dials on the unit itself the other is the gain control in Focusrite Control 2 ("Auto Gain"). Also make sure the Inst button on the 2i2 is not enabled.


Also check the 2i2 input gain in Audio MIDI Setup, it may be overriding the other settings.


There is also a gain control in whatever DAW you are using.


Check them to see if that solves the issue.

Feb 26, 2026 8:50 AM in response to Lady_Imperatrix

UPDATE: Well, I spoke with Focusrite today and...we have a result? Maybe? It had nothing to do with my MacBook, as has been suggested. But, after trying everything the support guy could think of, he asked if I could try the SM7B with the 2i2, without the Cloudlifter to see if it was quieter or the same. It actually was a wee bit louder. Then when we added the Cloudlifter to the mix, and whatta ya know, we had almost decent readings. Still not super great, but workable at least.


"How is this possible???", one might very well ask. Well, it was the support gentleman's opinion that when I was using the Vocaster and SM7B, the Vocaster was faulty. Then when I switched things up but still got weak levels, the 2i2 was working but the PocMic was faulty this time. 💀 I mean....what are the odds that would happen?? Really??


Whatever the reason, I've got levels I can at least work with now, so I'm not going to question it further. I'm just going to accept the fact the the gods find it amusing to drive me nuts every once in a while and just get on with life. 🤪


I will continue to use the SM7B with the 2i2 for voiceover work, and maybe just get myself a no frills USB mic for going live. Ob-la-di, ob-la-da, life goes on...


Thank you SO much for all the help and great suggestions. I really appreciate your kindness. 🙏

Feb 24, 2026 6:51 AM in response to Lady_Imperatrix

Lady_Imperatrix wrote:
After looking for answers online as to why this is happening, the only thing I came across were a couple of references to a bug that M1, M2, and M3 models have, where this throttling of input from an XLR source is the result. But I haven't found much about that other than those few references.

IMHO that makes no sense. All the inputs to the 2i2 are analog including the XLR inputs. The 2i2 converts the analog audio to a digital signal and sends it via USB to the Mac. The Mac only "sees" the 2i2, it has no idea what analog devices may be connected to the 2i2. It just sees the digital audio signal.

Feb 24, 2026 8:50 AM in response to MartinR

Hi Martin, thank you for taking the time to look at this. And your second reply...🤦‍♀️. Yes. I should have thought of that, but I'm going to blame my mind for being a bit frazzled from trying to figure this out. What you said made perfect sense, thank you so much.


As for the rest, I checked everything you suggested and I'm still stuck in Quiet-land. I used the auto gain feature in the Focusrite Control 2, and it cranked the gain to about 90%. I've tested with Audacity and Quicktime, and nothing really changes for either. In Audacity, I can do noise cancelling and then amplify, and end up with an almost reasonable sound, though it would be great if I didn't have to jump through those extra hoops and the volume would be there from the start. As it should, I would think.


If you have any other thoughts, I'm happy to hear them! This just makes no sense to me. But really, again, thanks for your time.

Feb 25, 2026 8:32 AM in response to MartinR

Thank you Martin, your kindness is deeply appreciated. Truly.


As for your checklist, it's a "check, check, check, and check" on all those things. Thank you for the links, that article led me to a couple of new tests and they just proved that everything seems to be working as it should, at least before it comes to the point of being sent to my computer. Today I even tried adding more power to the 2i2 via the 5V port in the back, as both my AI friend Claude and my tech savvy husband both said it sounded like maaayybbeee it could be that the 2i2 just isn't getting enough power, but alas, no go. Nothing improved. I quadruple checked all the settings in my MacBook as well, even stumbling across the "voice isolation" thing that was mentioned in a couple of forums I dug up, but that was also a dead end as "voice isolation" was already turned off. And on and on went the day.


So, I will gratefully take your suggestion of contacting Focusrite support via the link you provided, and see what they have to say. Maybe, fingers crossed, they will be able to help.


Thanks so much for looking into this and for your thoughts and suggestions. You're a star. 🌟

Feb 26, 2026 3:21 AM in response to Grant Bennet-Alder

Hello Grant, thanks for taking the time to respond. I've tried a few different cables, and nothing seemed to change. I just looked at the one that's in there now and it says "100W, 40Gbps, 8K Ultra HD." I would think, maybe, that 40Gbps would be ok, but in your opinion, does the 100W make a difference? I'm kinda grasping at straws now, so any thoughts you might have, regarding this or anything else really, are much appreciated. I'll try anything at this point!


Thanks so much.

MacBook Pro M1 low XLR input volume

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