I actually already have that selected but I'm still not getting anything. Could there be a secondary setting somewhere?
Thank you!

You might have missed to activate the Multi-channel mode for the ADI-2/4 Pro SE.

Yes, and your cabling is correct.

For your purpose USB– / Class Compliant Multi-channel–Mode (see manual page 40) is best suited, AD-DA Converter Mode is not.

Set:
• Unplug USB.
• SETUP / Options / Device Mode/ DSD / Basic Mode: USB.
• SETUP / Options / Device Mode/ DSD / CC-Mode: Multichannel.
• Replug USB.
• I/O / Phones Out 3/4 / Settings / Source: USB 3/4.
• I/O / Phones Out 3/4 / Settings / Rear TRS Source: Ph. 3/4.

Now, in your DAW:
• Send the signal to be mastered to ADI-2/4 Pro SE “Output 1/2”.
• Get the signal to be recorded on a new track from ADI-2/4 Pro SE “Input 1/2”.

• Send the signal to be monitored to ADI-2/4 Pro SE “Output 3/4”.

Another option, some DAW’s can configure ADI-2/4 Pro SE “Output 1/2” – “Input 1/2” as hardware insert, which might simplify the handling, making it similar to a VST plugin.

Thank you! This is great but I cannot change 3/4 to on???

https://i.ibb.co/m4rLK2F/IMG-5796.jpg/]ImageA

https://i.ibb.co/S72hFx6/IMG-5795.jpg/]ImageB

I can only hear things when I switch rear TRS off....

Due to ADI-2/4 Pro‘s different options for channels 1/2 vs. 3/4, it’s better to use 1/2 for speaker and headphones monitoring.
1/2 offers a full set of parameters each, for Line Out and Phones, switched by plugging ‘phones or in the menu.

3/4 doesn’t have this option.

Rear TRS is balanced too, with fitting TRS/XLR cables it can be used as send for the mastering chain.

Yes to all, Rear TRS supplies a “healthy signal”, and channel 1/2 is better suited for monitoring in turns on speakers and headphones.

I’m not familiar with Ableton/Mac so…

But the basic procedure is the same for all Multichannel DAWs:

• Set ADI-2/4 to USB– / Class Compliant Multi-channel–Mode:
https://forum.rme-audio.de/viewtopic.ph … 14#p209314
This one relates to the cabling you originally posted, if you reverse 1/2 XLR and 3/4 Rear TRS functions as suggested, take this into account.

• Activate ADI-2/4‘s Outs 1/2 and 3/4, and the Analog Input in the DAW settings.
• Route your signals to the various outputs inside your DAW project.
• Don’t forget that even the record monitoring of the mastered track needs to be routed to the speaker outputs INSIDE THE DAW!

That’t not different to any other multichannel interface.

BTW: The new ADI-2 Remote App simplifies the configuration process.

Exactly, all the routings are done in the DAW.
DAW 1/2 (= ADI-2 1/2) stays your monitor output all the time.

Yes, or on ADI-2 directly.

Now, for the mastering chain, you have 2 full blown DSPs at hand, one in the 3/4 Output, and one in ADI-2’s Analog Input:
DSP 3/4 -> your analog processing -> DSP ADI-2 Analog Input channel.

This offers some options like EQ pre/post analog processing, or the popular M/S processing by switching on BOTH (really both, or you will get a weird result) DSP’s M/S function.

This would be incredible! I cannot wait to try this.

BTW I wonder can I get a black rackmount option for the unit?

If you have a feedback loop your live monitor routing destination is wrong.
You may NOT route the live monitoring to ADI-2 3/4.

Here I collected all points from above as checklist:

In Ableton:

• Activate ADI-2/4‘s Outs 1/2 and 3/4, and the Analog Input in the DAW settings.
• Mixer Track or Submix Bus to be mastered -> ADI-2 Out 3/4.
• ADI-2 Analog In -> record track for mastered version.
• Record track for mastered version –> live monitoring to Ableton mixer’s master and/or monitor section.
• Ableton mixer master/monitor > ADI-2 Out 1/2.

Another option, Ableton can configure ADI-2/4 Pro SE “Output 3/4” – “ADI-2 analog Input” as hardware insert, called “ External Audio Effect”.
Then you could use the analog hardware the same way as a VST plugin.
See:
https://help.ableton.com/hc/en-us/artic … io-effects

ADI-2/4 Pro SE setting:

• Unplug USB.
• SETUP / Options / Device Mode/ DSD / Basic Mode: USB.
• SETUP / Options / Device Mode/ DSD / CC-Mode: Multichannel.
• Replug USB.
• I/O / Phones Out 3/4 / Settings / Source: USB 3/4.
• I/O / Phones Out 3/4 / Settings / Rear TRS Source: Ph. 3/4.

• Setup / Phones / Toggle Ph/Line: OFF (see below).
• Setup / Phones / Mute v. Ph 1/2: ON (see below).
• Setup / Phones / Mute v. Ph 3/4: OFF.

• I/O / Line Output 1/2 / Settings / Loopback: must be OFF.
• I/O / Phones Out 1/2 / Settings / Loopback: must be OFF.
• I/O / Phones Out 3/4 / Settings / Loopback: must be OFF.

Remark:
The option:
• Setup / Phones / Mute v. Ph 1/2: ON switches between speakers and headphones by plugging into Front PH 1/2.

If you prefer to leave the ‘phones plugged, and switch off speakers manually, switch the option to OFF and use instead:
• Setup / Phones / Toggle Ph/Line: 1/2.
This function can even be assigned to a button on the device or IR remote, to avoid going to the menu to switch speakers/phones.

I suggest to first collect informations, understand what M/S is technically, and how it works, and what it’s good for.

M/S Processing is a powerful tool, can be quite drastic, done wrong there can be huge negative side effects, specially if used in conjunction with dynamic processings.

That doesn’t mean you shouldn’t experiment with it, but with an open and critical ear if you really print it into your releases.

And don’t forget:
You always have to have the M/S Matrix twice in your signal chain, or you end up with an M/S coded signal instead of stereo, which you absolutely don’t want!

M/S coding and decoding is the exact same process, so there’s no dedicated coder or decoder.
The M/S processor is called “M/S Matrix”.
M/S stands for Mid/Side.

Starting with a stereo signal, the M/S Matrix separates the Mid- (mono) and the Side- (stereo) parts of a signal.
Mid goes to the left channel, Side to the right.

Running through the M/S Matrix again restores the original stereo signal.

The M/S Matrix is simple:
M = (left + right) / 2 -> left output
S = (left – right) / 2 -> right output

(The / 2 is just there to not double the overall level).

M/S Processing works like this:
Stereo -> M/S Matrix -> optional processing -> M/S Matrix-> =Stereo.

The simplest processing now would be changing the levels of either M or S.
This would control the stereo width of the result, ranging from:
- Mono (no Side-signal),
- Normal stereo (no change),
- Hyper-stereo (Mid-signal reduced by 50%),
- Ambient signal only, in Mono, but inverted polarity in the right channel: L+, R–, (Mid-signal level 0%).
This last one is completely Mono-incompatible, listening to it in Mono results in silence.

The key for successful M/S Processing is using different processings, like EQ e.g., on M and S for certain effects, usually well-dosed to avoid screwing the result.

When using different, or L/R-unlinked dynamic processing (Compressor, Limiter etc.), the result must be carefully watched for strange, annoying stereo-width pumping, best done on both headphones AND speakers.

Yes, but always in both the send (Phones Out 3/4) AND return (Analog Input).

Please read my carefully written posting above carefully.
It contains a lot of valuable information in short form, that you don’t find easily in the net, especially if you don’t know exactly what to look for.

The key is independent and different processing of the M and S channel:

• Convert stereo-to-M/S inside ADI-2’s Output 3/4’s DSP.

• (*) Optional: use ADI’s output DSP for e.g. stereo-EQ or M/S-Dual-EQ.

•(*) Run through the analog mastering chain to manipulate M (left channel) and S (right channel) independently.

• Return to ADI-2’s Analog Input.

• Use Analog Input‘s DSP’s M/S Matrix to reconvert M/S-to-stereo.

• Optional: use ADI’s input‘s DSP for e.g. stereo-EQ.

(*) REMARK: in ADI-2’s DSP internally the M/S Matrix is the first step.
So, the Dual-EQ option already allows true M/S processing by manipulation of M and S EQ separately.
Still, if using the non-Dual EQ, the result is the same as if applied to a normal stereo signal.
This is true for the analog processing too.

Changing both the M+S channels exactly the same equals working with a normal stereo signal - which is logical if you think about it.

The essential part in short, always set both:
• I/O / Settings / Phones Our 3/4 / M/S-Proc: On
• I/O / Settings / Analog Input / M/S-Proc: On