Sonosax M2D2

[Patrick Tresch]

Sonosax AES Support

 

 

[km6064]

just picked up an M2D2, really great little device! Does anyone else find the headphone output a little noisy? Hiss seems totally independent of inputs even when all off and nothing connected as soon as I switch on any option in the headphones output page there's a fairly prominent white hiss. 

Turning the headphone gain down to mute also does nothing, only setting all headphone outputs to none cuts it. Is this normal? Seems more prominent in some headphones than others particularly a pair of decent shure IEMs gives the worst hiss

[grawk]

are you powering it via usb or internal battery?  My m2d2 has a silent headphone amp (that sounds particularly good) with my JH13s.

[km6064]

 

1 hour ago, grawk said:

are you powering it via usb or internal battery?  My m2d2 has a silent headphone amp (that sounds particularly good) with my JH13s.

I tried both battery and usbc wall charging and same. I’m not sure if it’s an IEM thing, my beyer 700 pro x headphones are much better but can still hear diff between on and off, but the Shure se215 IEMs to monitor a pretty decent level hiss comes in but both headphones pretty silent plugged into anything else so just wondered what’s going on

[rich]

i use Ultimate Ears earphones when im mixing. when i had my 788 / CL9 setup, if i ran the headphone out of the 788 into the CL9, and then plugged my earphones into the CL9, i would get a lot of hiss. but plugging straight into the 788 was fine.
i think it was to do with the headphone amp in the CL9 not liking low impedence headphones so much

[grawk]

2 hours ago, km6064 said:

 

I tried both battery and usbc wall charging and same. I’m not sure if it’s an IEM thing, my beyer 700 pro x headphones are much better but can still hear diff between on and off, but the Shure se215 IEMs to monitor a pretty decent level hiss comes in but both headphones pretty silent plugged into anything else so just wondered what’s going on

Ok, listening I can hear some hiss at -20db volume on the JH13s.  I'd never noticed it before, it's very quiet at that level.  If I turn the mic preamps off, it goes away.

[km6064]

8 minutes ago, grawk said:

Ok, listening I can hear some hiss at -20db volume on the JH13s.  I'd never noticed it before, it's very quiet at that level.  If I turn the mic preamps off, it goes away.

That’s cool, with the beyers it’s barely noticeable just a bit jarring with the, I guess lower end generally, IEMs.

One question @grawk if you don’t mind. When you say you turn the preamps off, is that just turning everything on the headphones output off? Even if I disable the mic inputs, aes, usb etc in the inputs menu and turn headphone gain down to mute my hiss is always there, it’s only if I literally have nothing on in my headphones output page that the hiss cuts off. 
 

as you say it’s not horrendous just very distracting with my particular IEMs and still noticeable with the studio headphones.

 

the reason I generally heard it was in a quiet room I was recording a bit of acoustic guitar and monitoring with headphones the hiss was just pretty distracting almost gives an unnatural tinny sound while monitoring that isn’t really there on playback. It’s almost like noisy preamps on cheaper devices which is a shame because the actual mic preamps on the m2d2 are so great and quiet. 

[grawk]

Using the headphone control, I turn off mic inputs from the headphones, and the hiss goes away completely, even if I turn the headphones up to +24.  I usually run them at -20.

 

[km6064]

3 minutes ago, grawk said:

Using the headphone control, I turn off mic inputs from the headphones, and the hiss goes away completely, even if I turn the headphones up to +24.  I usually run them at -20.

 

Yup exactly the same, ok, I guess that’s just the system noise or impedance or something then, as you say cranking the headphone output or preamp gain doesn’t introduce much extra at all, so can’t be headphone amp or preamps, weird.
 

Thanks for checking though, appreciate it. Not a disaster but just be cool if that wasn’t there or could mitigate, at least sounds like I don’t have a faulty one though. 

[Patrick Tresch]

All I can hear is the mic preamp noise floor when the inputs are on with 48v and +20.

When I switch off the preamp power (and no input are active) the headphones gives me no signal.

 

[Patrick Tresch]

 

Here the Schoeps Minicmit in the Cinela Cosi, sitting a top the RED Komodo-X.

Sonosax M2D2 Preamp.

[Axel Mishael]

How did you convinced the DP to put such a weight (on the other hand a "camera mic" never sounded better).

[Patrick Tresch]

7 minutes ago, Axel Mishael said:

How did you convinced the DP to put such a weight (on the other hand a "camera mic" never sounded better).

 

I'm the DP 😉 

I usually use the CCM41&CCM8. I prefer a stereo (MS) PoV of the camera.

IMHO it's not too heavy.

 

Patrick

[Axel Mishael]

5 minutes ago, Patrick Tresch said:

 

I'm the DP 😉 

I usually use the CCM41&CCM8. I prefer a stereo (MS) PoV of the camera.

IMHO it's not too heavy.

 

Patrick

Yey!

 

 

[weroflu]

I would like to implement the m2d2 in a semi-fixed install with iphone  or android phone as the recorder, always connected to power supply, and accessible external sdcard reader.

 

The only android app that seems to work well is usb audio recorder which forces landscape mode - not ideal hence iphone as a possibility

 

m2d2 is always powered via the usb power jack.

 

what is the least mess cable situation for an iphone ?

 

I have  an anker 555 hub and iphone camera adapter on the way.

 

sidenote: does anyone know the mic input impedance on the m2d2?

[allensavage]

On 1/3/2025 at 4:43 PM, weroflu said:

I would like to implement the m2d2 in a semi-fixed install with iphone  or android phone as the recorder, always connected to power supply, and accessible external sdcard reader.

 

The only android app that seems to work well is usb audio recorder which forces landscape mode - not ideal hence iphone as a possibility

 

m2d2 is always powered via the usb power jack.

 

what is the least mess cable situation for an iphone ?

 

I have  an anker 555 hub and iphone camera adapter on the way.

 

sidenote: does anyone know the mic input impedance on the m2d2?

Hi, weroflu

 

I think there is not the least mess cable situation for an iphone, cause you need a lighting dock for usb connection if your iphone is 14 or older one. 

As I can tell, the config is:

 

iphone --> lighting to usb dock --> usb cable --> m2d2, 

m2d2 --> usb c cable --> 555 hub,

usb card reader with sd card --> 555 hub

 

in case of powering the iphone, one more cable:

lighting to usb dock --> lighting cable --> 555 hub

 

so, as far as what I digged into, the most simple one is:

iphone 15 or newer --> usb-c cable --> 555 hub,

usb card reader with sd card --> 555 hub

or you can do this with an android phone, which is similar.