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Stereo analog input for iphone device

garbulky

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#1
I use stereo microphones to record. And for the longest time I've been trying to find out how to get it in to my iphone so I could record the video with stereo audio.

So far I have succeeded with getting a mono channel. And it sounds great! I did it by using this cable
https://www.amazon.com/gp/product/B071GCV97P/
But it's NOT stereo as the cable only has a mono mic input

So what I'm looking for is a device that has a stereo analog input that then connects to the lightning port on my iphone SE.

Just to clarify, I am not looking for a device that has stereo microphones that plugs in to the lightning port.

I am looking for a lightning device with a stereo analog input that I can plug an external stereo signal in to.
 
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garbulky

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Thread Starter #3
Couldn't use the Apple camera connector and then any standard USB ADC?
What kind of standard USB ADC? Would it need to have external power? I mean for the ADC, not for the microphones which are already powered.
I have a behringer UCA 202 which is USB and has a stereo line input. I don't know if that will work.
 
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garbulky

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Thread Starter #5
So going off some suggestions
I am going to get this
https://www.amazon.com/Capture-Grabber-Cassette-Digital-Converter/dp/B079N4KPDG/


Whose stereo jack will connect in to the stereo output on my TASCAM DR 70d microphone preamp
The digitizer will go in to the USB connector on the camera connection kit. And I will have a external USB battery pack to power this setup. I am hoping this will allow me to record video in stereo audio
 
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garbulky

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Thread Starter #6
Just ordered camera connection kit, and the above digitizer. I am hoping it will work. I wil lfind out after memorial day.
 
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garbulky

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Thread Starter #8
@amirm Got it in a day early. And it works in stereo. I haven't had a chance to see how much the lipsync delay is but I doubt it's noticeable.
As far as I know I'm the only person (on youtube at least) that has been able to to input phantom powered XLR stereo microphones directly in to an iphone video. This would be the perfect thing for people looking to record an acoustic music video in 4k.
Only disadvantage so far is that the audio bit rate is rather low at around 200 kbps stereo 44.1 khz. I'm not even sure if that's mp3 or lossless. But I don't detect noticeably poor audio quality. Maybe there is an app which would allow for more tweaking of the audio.
 

RayDunzl

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#9
I haven't had a chance to see how much the lipsync delay is but I doubt it's noticeable.
Record a video with handclaps.

That should show the delay/sync clearly.
 
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garbulky

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Thread Starter #10
Record a video with handclaps.

That should show the delay/sync clearly.
Ah I shall try! For me as long as the lips are synced and it looks like the fingers match what is being played is good enough for me. I can tolerate a slight delay but not one where the lips are clearly not synced.
 
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garbulky

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Thread Starter #11
I put it through its paces. No hiss. The lip sync is fine. Its slightly delayed but not enough to affect things. I would say this is a viable option. Also it does not require a battery pack to function.
 
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garbulky

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Thread Starter #12
I put it through its paces. No hiss. The lip sync is fine. Its slightly delayed but not enough to affect things. I would say this is a viable option. Also it does not require a battery pack to function.
Just an update there IS a hiss. At least in the configuration that I use it as. But it's good enough for me not to be too distracting.
 

andreasmaaan

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#13
It's also super easy to correct the slight audio-video sync issue in software if you find over time that it gets annoying.
 
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#14
@amirm Got it in a day early. And it works in stereo. I haven't had a chance to see how much the lipsync delay is but I doubt it's noticeable.
As far as I know I'm the only person (on youtube at least) that has been able to to input phantom powered XLR stereo microphones directly in to an iphone video. This would be the perfect thing for people looking to record an acoustic music video in 4k.
Only disadvantage so far is that the audio bit rate is rather low at around 200 kbps stereo 44.1 khz. I'm not even sure if that's mp3 or lossless. But I don't detect noticeably poor audio quality. Maybe there is an app which would allow for more tweaking of the audio.
sorry to dig up this ancient thread, but here is a solution for phantom powered mics into ios

https://apogeedigital.com/products/duet

here is a decent input for unbalanced line level (stereo minijack)

https://line6.com/sonicport-audio-interface/sonicport/

both of those use lightning connectors

there are other high end solutions ($600 and up) by zoom, sonosax, etc that also record right to ios
 
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garbulky

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Thread Starter #15
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#16
tons of duets on reverb for $300-400. make sure you get one with the lightning cable, otherwise thats like an extra $50

im pretty sure the sonicports come with only lightning, or maybe lightning as well as the old 30-pin.

the zoom model im talking about is is the F6, there is also the sound devices mixpre series. both of these are recorders in tehri own right so the ios interface is more of a side feature (like for streaming or whatever)

the sonosax SX-M2 is the real deal when it comes to phantom powered ios, but its also $1300
https://www.sonosax.ch/product/sx-m2d2/

another is the CEntrance Mixerface, which i beleive can be a self contained recorder as well, but has no interface which is where the phone comes in
https://centrance.com/mixerface/
about $500

as far as ios recording apps Apogee Metarecorder is the best ive found, its only $5.

I use it all the time with my DPA d:vice, which is amazing in its own right. its got a well-implemented AKM AK5552VN ADC in it which just SIPS power while delivering great performance, 114 dB dynamic range they claim.

https://www.dpamicrophones.com/accessories/mma-a-digital-audio-interface

the d:vice is a mic-in device by nature, with 5V bias power for DPA 406x mini lavs, as well as powering their full size SDC mics (4006, 4011, etc.). The SDCs are permanently polarized so you can get by with just the 5V bias power for the FET instead of full phantom, when the capsules are used with the MMP-G cables

https://www.adorama.com/dpmmpgs.html

ive also successfuly hacked it into a line-in device with blocking capacitors and resistors between signal and ground to 'trick' it into turning on but thats another story


heres a brief demo of that setup. its quite versatile, and with todays efficient chips you can get amazing sound in a tiny package

 
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Kimgrey

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#17
So going off some suggestions
I am going to get this
https://www.amazon.com/Capture-Grabber-Cassette-Digital-Converter/dp/B079N4KPDG/


Whose stereo jack will connect in to the stereo output on my TASCAM DR 70d microphone preamp
The digitizer will go in to the USB connector on the camera connection kit. And I will have a external USB battery pack to power this setup. I am hoping this will allow me to record video in stereo audio
This is a great option.But at this point, you still need to buy a special adapter for the iPhone.
 
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garbulky

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Thread Starter #18
This is a great option.But at this point, you still need to buy a special adapter for the iPhone.
Just an update, I did get this device and it worked (and did stereo). The adapter I used was the camera connection kit (that goes in to the USB). It's also reccomended to also hook the secondary input up to a battery for charging. The stereo 3.5mm jack went into the camera output jack of my TASCAM DR-70d. The USB end went in the Apple camera connection kit.
https://www.amazon.com/Apple-Lightning-USB3-Camera-Adapter/dp/B01F7KJDIM/
 
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