The Official Dirac Live Thread: Start w/1,2,3 🙋‍♂️

[cawgijoe]

So, reading the latest, are we to assume that the UMIK-1 with USB-C will not work, however the UMIK-2 will?
Am I reading this right?

I'm glad I've held on to my UMIK-1 with USB-A....this is crazy.

[ttocs]

Jan 22, 2024 8:14:13 GMT -5 cawgijoe said:

So, reading the latest, are we to assume that the UMIK-1 with USB-C will not work, however the UMIK-2 will?
Am I reading this right?

I'm glad I've held on to my UMIK-1 with USB-A....this is crazy.

Please see my strike through on a previous post on Jan 19 8:56pm. I amended the findings with UMIK-2 USB-C as a 1-off, can't duplicate, so the problem still exists with MacBook Air M1 running Sonoma 14.2.1 and now Mac mini 2023 with M2 running Ventura and Sonoma running 14.2.1.

I myself can only speak to the UMIK-2 with personal experience, but I've read on the miniDSP forum that the UMIK-1 USB-C version has similar issues.

With Windows PC these issues seem to be worked out when you follow the recommendations from miniDSP regarding drivers and mic firmware update, but not with a Mac with a M processor. I haven't yet checked my older MacBook Pro with an Intel processor. Also, miniDSP had discussion with Dirac specifically about the UMIK-2 Low Signal To Noise issue, low sensitivity, and Dirac made a "correction" with Dirac Live 3.3.3, but I think this was only to the error reporting so the app won't throw a error of Low Signal To Noise when using the UMIK-2, so it doesn't really correct the low sensitivity.

Dirac does not see the UMIK-2 as having a Sensitivity spec. With UMIK-1 it sees my mics as -18dB and -12dB, which is how they each are setup with the internal DIP switches. But there is no sensitivity shown for the UMIK-2, which I believe is part of the issue - but may not be Dirac's fault, might really be how the UMIK-2 is configured.

[cawgijoe]

Jan 22, 2024 8:54:16 GMT -5 ttocs said:

Jan 22, 2024 8:14:13 GMT -5 cawgijoe said:

So, reading the latest, are we to assume that the UMIK-1 with USB-C will not work, however the UMIK-2 will?
Am I reading this right?

I'm glad I've held on to my UMIK-1 with USB-A....this is crazy.

Please see my strike through on a previous post on Jan 19 8:56pm. I amended the findings with UMIK-2 USB-C as a 1-off, can't duplicate, so the problem still exists with MacBook Air M1 running Sonoma 14.2.1 and now Mac mini 2023 with M2 running Ventura and Sonoma running 14.2.1.

I myself can only speak to the UMIK-2 with personal experience, but I've read on the miniDSP forum that the UMIK-1 USB-C version has similar issues.

With Windows PC these issues seem to be worked out when you follow the recommendations from miniDSP regarding drivers and mic firmware update, but not with a Mac with a M processor. I haven't yet checked my older MacBook Pro with an Intel processor. Also, miniDSP had discussion with Dirac specifically about the UMIK-2 Low Signal To Noise issue, low sensitivity, and Dirac made a "correction" with Dirac Live 3.3.3, but I think this was only to the error reporting so the app won't throw a error of Low Signal To Noise when using the UMIK-2, so it doesn't really correct the low sensitivity.

Dirac does not see the UMIK-2 as having a Sensitivity spec. With UMIK-1 it sees my mics as -18dB and -12dB, which is how they each are setup with the internal DIP switches. But there is no sensitivity shown for the UMIK-2, which I believe is part of the issue - but may not be Dirac's fault, might really be how the UMIK-2 is configured.

My Macbook Air is early 2020 and has an Intel i5 processor.

[ttocs]

Jan 22, 2024 9:37:11 GMT -5 cawgijoe said:

My Macbook Air is early 2020 and has an Intel i5 processor.

This is mine.

[ttocs]

Here is a link to one discussion about the UMIK-1 with USB-C connector on Mac.

www.minidsp.com/forum/umik-questions/21829-umik-1-usb-c-on-mac-and-dirac-low-signal?start=0

[ttocs]

Jan 20, 2024 20:30:26 GMT -5 jayfabs said:

Edit: I just picked up a MacBook Pro. Doing a data transfer and will hopefully find out if this fixes my issues with the Mac at least.
Edit: the new Mac does not fix the issue. I installed Dirac 3.8.2 😂 looks like I just need to stick to the Emotiva mic. At least I should be able to run Dirac from the Mac without it dropping out.

Yesterday I bought a Mac mini M2Pro 2023. It came with Ventura, which I updated to Sonoma. As I've mentioned already in another post, no joy with the UMIK-2 USB-C mic and Dirac.

So tonight I got out my mic calibrator. It outputs a calibrated 94dB and 114dB SPL. I got Dirac running and decided to compare mics in Dirac Live Volume Calibration.

Mic Gain set at 36% because I wanted one of the mics to be at the peak, with all other measurements lower than peak.
Mic Calibrator set for 114dB SPL
Mic Gain Meter reads at:
UMIK-1 = +20dB (or, 0.0dB when looking at the meter readout to the right when active)
UMIK-2 = -19dB (and -19dB when looking at the meter readout to the right when active, or, (100% + 1dB))

Mic Calibrator set for 94dB SPL
Mic Gain Meter reads at:
UMIK-1 = -17dB.
UMIK-2 = -33dB

One observation is that the Mic Gain meter is marked as +20dB on the left side at the top of its scale, yet when the meter indicator drops just below that maximum, the numbers become negative, as in, -0.1dB etc, and 100% is -20dB. What does this mean? As Mr Hand wrote on the blackboard when Spicoli said the words, "I don't know". But now I question why Dirac is calling this red zone in the meter scale "digital gain". Is this zone actually "headroom" in this meter, and maybe it's not really bad to use it? If the answer to this last question is yes, then this means there is no problem with using the UMIK-2 mic. We would just need to exercise caution if nearing the top of the scale, and, be certain we don't run out of room with the other settings.

That last sentence is important because it may be that, if this red zone is really headroom, some mic positions for some speakers might need that headroom, and if it's not available the clipping would probably occur.

As far as deciphering the meter readings, it's not easily done as it doesn't seem to be linear when compared to actual usage of both mics in the same location measuring the same speaker in Volume Calibration, the numbers don't seem to add up how I would expect. To me right now, this doesn't matter. I just wanted to collect more data so I'd have some extra info with which to develop and pose questions to Dirac Support.

[jayfabs]

Jan 22, 2024 20:06:47 GMT -5 ttocs said:

Jan 20, 2024 20:30:26 GMT -5 jayfabs said:

Edit: I just picked up a MacBook Pro. Doing a data transfer and will hopefully find out if this fixes my issues with the Mac at least.
Edit: the new Mac does not fix the issue. I installed Dirac 3.8.2 😂 looks like I just need to stick to the Emotiva mic. At least I should be able to run Dirac from the Mac without it dropping out.

Yesterday I bought a Mac mini M2Pro 2023. It came with Ventura, which I updated to Sonoma. As I've mentioned already in another post, no joy with the UMIK-2 USB-C mic and Dirac.

So tonight I got out my mic calibrator. It outputs a calibrated 94dB and 114dB SPL. I got Dirac running and decided to compare mics in Dirac Live Volume Calibration.

Mic Gain set at 36% because I wanted one of the mics to be at the peak, with all other measurements lower than peak.
Mic Calibrator set for 114dB SPL
Mic Gain Meter reads at:
UMIK-1 = +20dB (or, 0.0dB when looking at the meter readout to the right when active)
UMIK-2 = -19dB (and -19dB when looking at the meter readout to the right when active, or, (100% + 1dB))

Mic Calibrator set for 94dB SPL
Mic Gain Meter reads at:
UMIK-1 = -17dB.
UMIK-2 = -33dB

One observation is that the Mic Gain meter is marked as +20dB on the left side at the top of its scale, yet when the meter indicator drops just below that maximum, the numbers become negative, as in, -0.1dB etc, and 100% is -20dB. What does this mean? As Mr Hand wrote on the blackboard when Spicoli said the words, "I don't know". But now I question why Dirac is calling this red zone in the meter scale "digital gain". Is this zone actually "headroom" in this meter, and maybe it's not really bad to use it? If the answer to this last question is yes, then this means there is no problem with using the UMIK-2 mic. We would just need to exercise caution if nearing the top of the scale, and, be certain we don't run out of room with the other settings.

That last sentence is important because it may be that, if this red zone is really headroom, some mic positions for some speakers might need that headroom, and if it's not available the clipping would probably occur.

As far as deciphering the meter readings, it's not easily done as it doesn't seem to be linear when compared to actual usage of both mics in the same location measuring the same speaker in Volume Calibration, the numbers don't seem to add up how I would expect. To me right now, this doesn't matter. I just wanted to collect more data so I'd have some extra info with which to develop and pose questions to Dirac Support.

I was doing some more reading on the minidsp forums and there seems to be many issues with the USB-C Mic's. Even differences with how the UMIK-1 measures to the UMIK-2. I think I'm going to try and find a UMIK-1 USB-A to work with my Mac. 

I was trying to do more reading on the whole +20db in Dirac for the Mic gain and I'm not sure either if its an issue. 

[ttocs]

Jan 23, 2024 9:11:44 GMT -5 jayfabs said:

I was doing some more reading on the minidsp forums and there seems to be many issues with the USB-C Mic's. Even differences with how the UMIK-1 measures to the UMIK-2. I think I'm going to try and find a UMIK-1 USB-A to work with my Mac. 

I was trying to do more reading on the whole +20db in Dirac for the Mic gain and I'm not sure either if its an issue. 

I have questions into miniDSP Support and Dirac Support.

miniDSP got back to me late last night asking for screenshots, so I'll send some today.

[ttocs]

UMIK-2 USB-C microphone with Dirac Live.

Flavio of Dirac replied to my support request regarding the UMIK-2 USB-C mic. He didn't respond to anything I pointed out with the Dirac app with regard to the UMIK-2, nor did he answer direct questions about how the Mic Gain meter in the zone above 100% is to be interpreted.

Instead, he suggested contacting miniDSP Support to request the "solution/app for the UMIK-2 that allows increasing the mic gain". This is strange considering that the only app that has a problem with the UMIK-2 mic is Dirac.

[jayfabs]

Jan 23, 2024 11:16:04 GMT -5 ttocs said:

UMIK-2 USB-C microphone with Dirac Live.

Flavio of Dirac replied to my support request regarding the UMIK-2 USB-C mic. He didn't respond to anything I pointed out with the Dirac app with regard to the UMIK-2, nor did he answer direct questions about how the Mic Gain meter in the zone above 100% is to be interpreted.

Instead, he suggested contacting miniDSP Support to request the "solution/app for the UMIK-2 that allows increasing the mic gain". This is strange considering that the only app that has a problem with the UMIK-2 mic is Dirac.

You should respond with the same questions. I love it when they dodge the questions. Thank you for trying to figure this out. I’m on the hunt for an older UMIK-1 at this point. 

[ttocs]

Jan 23, 2024 14:15:23 GMT -5 jayfabs said:

Jan 23, 2024 11:16:04 GMT -5 ttocs said:

UMIK-2 USB-C microphone with Dirac Live.

Flavio of Dirac replied to my support request regarding the UMIK-2 USB-C mic. He didn't respond to anything I pointed out with the Dirac app with regard to the UMIK-2, nor did he answer direct questions about how the Mic Gain meter in the zone above 100% is to be interpreted.

Instead, he suggested contacting miniDSP Support to request the "solution/app for the UMIK-2 that allows increasing the mic gain". This is strange considering that the only app that has a problem with the UMIK-2 mic is Dirac.

You should respond with the same questions. I love it when they dodge the questions. Thank you for trying to figure this out. I’m on the hunt for an older UMIK-1 at this point. 

Got a response to the question about Dirac Volume Calibration: Mic Gain:: Is the zone above 100% digital gain or headroom?
"Hello,
that's digital gain, not headroom.
I'd not expect the quality to suffer but it doesn't help with the SNR as the ambient noise is amplified together with the test signal.
Kind regards,
Flavio"

Makes sense to me that noise is carried along with the increased mic gain. So raising mic gain above 100% might not hurt like I thought it could, still not recommended, but it does lower the level of the sweeps by not needing to raise the Master Output as high.

Still waiting to hear back from miniDSP regarding a "solution/app" as it was called by Flavio, that can adjust the gain of a UMIK-2 mic. This still doesn't get to the core problem which is that Dirac isn't seeing the UMIK-2 mic's true internal Sensitivity setting the same way that REW and any other app sees it.

[ttocs]

miniDSP DevTeam responded:
"Hi Scott,
As mentioned, in all measurements we can see that your mic gain is at 100% now. You can easily increase this to +20dB. Just slide that fader up.

UMIK-2 does have a lower sensitivity for higher SPL capabilities. With this said, we (and most of our customers) use it fine with Dirac live. You just need to increase the gain in this case.

WE've also added the gain control tool to your user downloads section. It will allow you to gain access to the analog gain. Please note that in doing so, the SPL calibration inside REW will be wrong.
Best for you to reset the gain to +18dB when you get the mic for REW.

Hoping this info helps and feel free to contact us if you have further questions.
Best Regards
miniDSP DevTeam"

So Dirac says it's ok to move the Mic Gain slider up above 100% in Dirac Live Volume Calibration, and now miniDSP DevTeam says the same. This is confirmed by Dirac to be DIGITAL GAIN.

miniDSP has the miniDSP-MIK app that allows for changing the ANALOG gain setting of the UMIK-2 (if you don't see it in your User Downloads of your miniDSP user account, just request the app). It's really quick to use. Just takes seconds for the app to load, and then seconds for the mic to connect, then just move the slider to the desired setting.


What's odd is that the UMIK-2 is shown as having a 18dB Gain. Compare this to the UMIK-1 mics which have -18dB in the cal files, which never seemed right to me. But, when I compare the UMIK-1 mic set for -18dB (using the internal DIP Switches) to the UMIK-1 set for +18dB, and then go to Sound in Mac Preferences and click on each mic I can compare both mics using the LIVE Meter, which shows the UMIK-2 as having very low level vs the UMIK-1. After changing the gain of the UMIK-2 to 32dB, a +14dB increase, the level of both mics are now equal, and when I now compare both mics in Dirac Volume Calibration they are both equal here too.

I'm going to test some things by making some new Dirac filters and compare at each phase of the process to see if there's anything that shows up as being a problem, as much as I can determine. It's just so difficult with these products having such limited technical information available, and even when direct questions are posed, the responses are still lacking.

My guess right now is that when the UMIK-2 is set for +32dB gain,  it is now equal to the gain of the UMIK-1 when it is set for -18dB Sensitivity. It bugs me when different nomenclature is used for what is seemingly the same setting. BTW, I'm comparing the mics with and without the cal files applied. For example, when checking the mics in Sound Preferences on the Mac, there is no cal file associated with mics. In REW the SENS FACTOR in a cal file is used for adjusting the Sensitivity, but without a cal file the SPL Meter in REW can be used as a comparing tool by using the manual calibration sequence which can then be used as another basis for comparison.

Clear as mud?

[jayfabs]

Jan 25, 2024 10:32:34 GMT -5 ttocs said:

miniDSP DevTeam responded:
"Hi Scott,
As mentioned, in all measurements we can see that your mic gain is at 100% now. You can easily increase this to +20dB. Just slide that fader up.

UMIK-2 does have a lower sensitivity for higher SPL capabilities. With this said, we (and most of our customers) use it fine with Dirac live. You just need to increase the gain in this case.

WE've also added the gain control tool to your user downloads section. It will allow you to gain access to the analog gain. Please note that in doing so, the SPL calibration inside REW will be wrong.
Best for you to reset the gain to +18dB when you get the mic for REW.

Hoping this info helps and feel free to contact us if you have further questions.
Best Regards
miniDSP DevTeam"

So Dirac says it's ok to move the Mic Gain slider up above 100% in Dirac Live Volume Calibration, and now miniDSP DevTeam says the same. This is confirmed by Dirac to be DIGITAL GAIN.

miniDSP has the miniDSP-MIK app that allows for changing the ANALOG gain setting of the UMIK-2 (if you don't see it in your User Downloads of your miniDSP user account, just request the app). It's really quick to use. Just takes seconds for the app to load, and then seconds for the mic to connect, then just move the slider to the desired setting.


What's odd is that the UMIK-2 is shown as having a 18dB Gain. Compare this to the UMIK-1 mics which have -18dB in the cal files, which never seemed right to me. But, when I compare the UMIK-1 mic set for -18dB (using the internal DIP Switches) to the UMIK-1 set for +18dB, and then go to Sound in Mac Preferences and click on each mic I can compare both mics using the LIVE Meter, which shows the UMIK-2 as having very low level vs the UMIK-1. After changing the gain of the UMIK-2 to 32dB, a +14dB increase, the level of both mics are now equal, and when I now compare both mics in Dirac Volume Calibration they are both equal here too.

I'm going to test some things by making some new Dirac filters and compare at each phase of the process to see if there's anything that shows up as being a problem, as much as I can determine. It's just so difficult with these products having such limited technical information available, and even when direct questions are posed, the responses are still lacking.

My guess right now is that when the UMIK-2 is set for +32dB gain,  it is now equal to the gain of the UMIK-1 when it is set for -18dB Sensitivity. It bugs me when different nomenclature is used for what is seemingly the same setting. BTW, I'm comparing the mics with and without the cal files applied. For example, when checking the mics in Sound Preferences on the Mac, there is no cal file associated with mics. In REW the SENS FACTOR in a cal file is used for adjusting the Sensitivity, but without a cal file the SPL Meter in REW can be used as a comparing tool by using the manual calibration sequence which can then be used as another basis for comparison.

Clear as mud?

Great work, Thanks. Good to know that just raising the mic gain should be ok. I will look into the mic app.

[dkaudio]

I was running Dirac and was getting errors I have never seen before and could not find any information on.

While performing a measurement, I kept receiving errors of "instances of lost samples". Some measurements took over 10 times to go through! I tried uninstalling and reinstalling Dirac (latest 3.8.2 version), rebooting, different USB ports for the mic, etc. Sometimes, the measurements for a position would go through, then there would be an exclamation point on the measurement position stating there was an issue and it could not be used.

I finally got them all done after a really high number of attempts, proceeded to play with the curtains and loaded the filters. The XMC-2 is WAY quieter now. I used to go around -15 to show off the system (loud), now I can go in the + range which is kind of scary. The odd thing is, I pulled the curtains in way lower this time to 400hz or so. I should have way more head room.

Any ideas on either issue?

[foggy1956]

Jan 26, 2024 20:00:43 GMT -5 dkaudio said:

I was running Dirac and was getting errors I have never seen before and could not find any information on.

While performing a measurement, I kept receiving errors of "instances of lost samples". Some measurements took over 10 times to go through! I tried uninstalling and reinstalling Dirac (latest 3.8.2 version), rebooting, different USB ports for the mic, etc. Sometimes, the measurements for a position would go through, then there would be an exclamation point on the measurement position stating there was an issue and it could not be used.

I finally got them all done after a really high number of attempts, proceeded to play with the curtains and loaded the filters. The XMC-2 is WAY quieter now. I used to go around -15 to show off the system (loud), now I can go in the + range which is kind of scary. The odd thing is, I pulled the curtains in way lower this time to 400hz or so. I should have way more head room.

Any ideas on either issue?

Did it say that the measurement completed but was inaccurate and could not be used for phase filters?

[ttocs]

Jan 25, 2024 19:42:40 GMT -5 jayfabs said:

Jan 25, 2024 10:32:34 GMT -5 ttocs said:

miniDSP DevTeam responded:
"Hi Scott,
As mentioned, in all measurements we can see that your mic gain is at 100% now. You can easily increase this to +20dB. Just slide that fader up.

UMIK-2 does have a lower sensitivity for higher SPL capabilities. With this said, we (and most of our customers) use it fine with Dirac live. You just need to increase the gain in this case.

WE've also added the gain control tool to your user downloads section. It will allow you to gain access to the analog gain. Please note that in doing so, the SPL calibration inside REW will be wrong.
Best for you to reset the gain to +18dB when you get the mic for REW.

Hoping this info helps and feel free to contact us if you have further questions.
Best Regards
miniDSP DevTeam"

So Dirac says it's ok to move the Mic Gain slider up above 100% in Dirac Live Volume Calibration, and now miniDSP DevTeam says the same. This is confirmed by Dirac to be DIGITAL GAIN.

miniDSP has the miniDSP-MIK app that allows for changing the ANALOG gain setting of the UMIK-2 (if you don't see it in your User Downloads of your miniDSP user account, just request the app). It's really quick to use. Just takes seconds for the app to load, and then seconds for the mic to connect, then just move the slider to the desired setting.


What's odd is that the UMIK-2 is shown as having a 18dB Gain. Compare this to the UMIK-1 mics which have -18dB in the cal files, which never seemed right to me. But, when I compare the UMIK-1 mic set for -18dB (using the internal DIP Switches) to the UMIK-1 set for +18dB, and then go to Sound in Mac Preferences and click on each mic I can compare both mics using the LIVE Meter, which shows the UMIK-2 as having very low level vs the UMIK-1. After changing the gain of the UMIK-2 to 32dB, a +14dB increase, the level of both mics are now equal, and when I now compare both mics in Dirac Volume Calibration they are both equal here too.

I'm going to test some things by making some new Dirac filters and compare at each phase of the process to see if there's anything that shows up as being a problem, as much as I can determine. It's just so difficult with these products having such limited technical information available, and even when direct questions are posed, the responses are still lacking.

My guess right now is that when the UMIK-2 is set for +32dB gain,  it is now equal to the gain of the UMIK-1 when it is set for -18dB Sensitivity. It bugs me when different nomenclature is used for what is seemingly the same setting. BTW, I'm comparing the mics with and without the cal files applied. For example, when checking the mics in Sound Preferences on the Mac, there is no cal file associated with mics. In REW the SENS FACTOR in a cal file is used for adjusting the Sensitivity, but without a cal file the SPL Meter in REW can be used as a comparing tool by using the manual calibration sequence which can then be used as another basis for comparison.

Clear as mud?

Great work, Thanks. Good to know that just raising the mic gain should be ok. I will look into the mic app.

Odd, but true. (Dick Van Dyke episode.)

Just received a UMIK-1 mic today which is a USB-C version. This also will NOT cooperate with Dirac when using a USB-C to USB-C cable. It has very low sensitivity requiring the Mic Gain slider to be pushed all the way up to get close, but not close enough, to be able to be used the way my other UMIK-1/USB-A mics can be used in Dirac.

[jayfabs]

Jan 29, 2024 15:37:43 GMT -5 ttocs said:

Jan 25, 2024 19:42:40 GMT -5 jayfabs said:

Great work, Thanks. Good to know that just raising the mic gain should be ok. I will look into the mic app.

Odd, but true. (Dick Van Dyke episode.)

Just received a UMIK-1 mic today which is a USB-C version. This also will NOT cooperate with Dirac when using a USB-C to USB-C cable. It has very low sensitivity requiring the Mic Gain slider to be pushed all the way up to get close, but not close enough, to be able to be used the way my other UMIK-1/USB-A mics can be used in Dirac.

Good to know I’m not the only one but sucks you had to waste money.

[ttocs]

Jan 29, 2024 19:55:24 GMT -5 jayfabs said:

Jan 29, 2024 15:37:43 GMT -5 ttocs said:

Odd, but true. (Dick Van Dyke episode.)

Just received a UMIK-1 mic today which is a USB-C version. This also will NOT cooperate with Dirac when using a USB-C to USB-C cable. It has very low sensitivity requiring the Mic Gain slider to be pushed all the way up to get close, but not close enough, to be able to be used the way my other UMIK-1/USB-A mics can be used in Dirac.

Good to know I’m not the only one but sucks you had to waste money.

I don't consider it a waste, I want more mics. I've used multiple mics connected concurrently for various tests I've done, and it saved a lot of time vs moving one mic around. 

[marcl]

This is a direct comparison of Dirac and Audyssey (pronounced OH-di-SAY)  using a Denon receiver.  Both Denon and Marantz allow you to run either brand of room correction and they both support DLBC. ( BTW ... Gene and Matthew at Audioholics have said they were planning a similar quantitative/qualitative comparison using the Marantz receiver in Gene's room ... but they haven't done that yet.)

Anyways, here John gives his subjective impressions first, then shows some interesting REW measurements.  Note that he doesn't show any measurements other than frequency response.  I would like to also see Impulse Response and Clarity measurements ... but like pretty much everyone else, he ignores the fact that ONLY Dirac corrects Phase and Impulse.

The results seem pretty conclusive ...

[cawgijoe]

Jan 29, 2024 21:48:31 GMT -5 ttocs said:

Jan 29, 2024 19:55:24 GMT -5 jayfabs said:

Good to know I’m not the only one but sucks you had to waste money.

I don't consider it a waste, I want more mics. I've used multiple mics connected concurrently for various tests I've done, and it saved a lot of time vs moving one mic around. 

I'm glad I have the UMIK-1 with USB-A....I'm wondering if there is a "fix" in the works for the USB-C mics?