After opening a project I'm working on, it has a ton of reverb that wasn't there before

I opened a project that I’ve been working on, pressed play and there’s a ton of reverb/delay on it ! There was no reverb or delay at all before as I’m only in the composing stage. There is so much long reverb that after a few seconds it turns into a virtual mush. I closed Cubase, restarted my computer and tried again but the reverb is still there. I tried an older version (I save every version separately as I add to the composition) and it also has a ton of reverb/delay added. I don’t know how to fix it. What has happened ? Does anyone know ? Thanks in advance.

UPDATE, I disconnected “audio device” in the control room (which I turned on in a different project so that I could listen to a preview in the media bay) and that’s fixed it. But I still don’t understand why having the audio device connected to the interface caused all that reverb/delay. Even though I’ve solved it I’d still like to understand what was going on if anyone knows.


To me it sounds like you created some kind of feedback.

Do you ue Loopback at your hardware?

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I don’t know what loopback means so I’d say no, not unless it’s a default. What do you mean by loopback?

Unless I missed something, @Martin.Jirsak is talking about an eventuel loop in the audio signal path of your setup, which occurs when an audio signal, after having left Cubase, returns in one way or another to Cubase inputs, generating a distorded and multi echoed signal.

What is your audio device and is there any loopback feature of it that could have been inadvertenly enabled ? Additionaly, could you give us more precisions about the connections between it and your DAW (with related screenshots, eventually…) ?

EDIT - Beside this, and to quicly see if any loopback is involved, try to set the Input Routing of the tracks used to the No Bus value and/or set temporarily in the Studio > Audio Connections > Inputs panel, the eventual inputs concerned to Not Connected.

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Loopback is doe Audio Devices feature, which allows you send the output of your Audio Device back to a virtual input. As result, you can record an output of your device. It depends on your Audio Device, how the routing is done. Steinberg devices offer to enable this option in the Control Panel.

Please consult the operation manual.

The audio device is a Steinberg UR242, it has a loopback function, I only know that because I did a search in the manual. I’ve consulted the manual and it shows a control panel with a checkbox for loopback, however to go to the control panel it gives these direction: Devices > Device Setup> Control Panel. I can’t make sense of this in my PC or in Cubase. The Steinberg ASIO control panel in Cubase only has sample rate and buffer size. The connections to the UR242 are a USB cable and two lineouts, I haven’t connected anything to the line inputs on the UR242. The input routing can only be set to no bus on audio tracks. I tried it on those audio tracks and the reverb is still there. Setting audio device to “not connected” in the inputs tab in audio connections makes no difference. The only thing that makes a difference, as I’ve said, is setting the audio device to “not connected” in the control room. You’ll have to tell me what you want a screenshot of as I can’t see any clue to what’s going on in the zones and event window.


That’s a good way to solve issues!

These menu items have been renamed to Studio > Studio Setup…

Have you checked all tabs of the Control Panel? Do you have the latest driver and firmware installed?

The loopback is software connection. That’s the trick of the loopback, you don’t need any cables.

Ok, let’s take things one after the other :

  • Be sure that the loopback function is DISABLED (see the Troubleshooting section of the UR242 manual for this, p.26, as there are two different ways of activating it).
  • If you still get ‘reverb’ on the audio signals when playing back the involved project, could you check also that you don’t have any inserts or sends more or less visible in Cubase audio signal path (this includes the Control Room > Inserts tab). If so, at least, disable them ALL.
  • If the audio signal has still the reverb on it, could you check also that there isn’t any insert or REV-X send in the dspMixFx UR242 panel (manual, p.8). There could be also something more or less hidden in it.
  • At the end, if none of these work, could you post screenshots of the following (yep, that’s a lot but at the end we want to fix the issue, which can come from different places) :
    Studio > Audio Connections > Inputs panel
    Studio > Audio Connections > Outputs panel
    Studio > Audio Connections > Control Room panel
    Studio > Studio Setup > Audio System panel
    Studio > Studio Setup > Audio System > [Steinberg UR242] panel.
    – A screenshot of an audio track showing the issue in the Project page, with its inspector visible (this, to check the Input/Output routing of it) while playing it back. Something like this :

EDIT : added an item to the screenshots list…

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These menu items have been renamed to Studio > Studio Setup
Yes but " Devices > Device Setup> Control Panel" is from the UR242 manual, not Cubase. In any case, as I said, the control panel inStudio setup is only for sample rate and buffer size, it is not a control panel for the audio interface.

Have you checked all tabs of the Control Panel? Do you have the latest driver and firmware installed?
Yes and yes.

Okay, the manual was very hard to follow on this but I finally found the UR242 control panel and loopback is not enabled.
There is no reverb (or any other effects) added by me and I didn’t start it from a template so I’m sure there is no reverb added.

I can’t see anywhere it might be added so I’ve included a screenshot of the dspMixFx. The REV-X send is on by default (according to the manual) and the reverb decay’s default is Hall at 2.51 seconds, I tried reducing that to .25 s but it made no difference.


Your Monitor 1 bus is rooted to the UR FX bus. Remove the Monitor bus and add another new one, which is Stereo. Route it’s Ports to UR Mix L/R. Keep Out Not Connected.

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That has indeed fixed it! Thanks so much Martin and cubic13!! when I went to change I got a message saying “this port is already in use” but I went ahead and changed it and the reverb has stopped even though control room audio device is connected to Steinberg USB ASIO. So the FX bus has massive reverb on it by default? I’ve kept the control room either off or audio device not connected since I got Cubase 11 Pro 3 years ago because of this!! One thing Martin, what did you mean by “Keep Out Not Connected”?
I’m not a power user yet but I learn more every time!

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Probably not, but looking at your last dspMixFx UR242 panel, I see that the REV-X send is activated and, according to tue UR242 manual, there is a Hardware window that allows to adjust the send level.

I’m going to guess (@Martin.Jirsak will correct me if I’m wrong…). As you are using the Control Room, I would suggest to disable the Stereo Out (aka set it as Not connected) and use the Control Room instead. Here, I have the following setup for all what is output related :

As you can see, all my outputs are routed via the control room to their respective hardware connectors and the Stereo Out bus is set as Not Connected and it’s probably what martin was suggesting.

BUT… In your case, it seems that something is missing : I don’t see anywhere a bus dedicated to your phones, which would be useful in your case, allowing you to monitor either via your monitors or your phones, if you have both, with different levels (an invaluable feature which justify alone the use of the Control room - I use it all the time).

So, if you have time, try to add a phone bus in the Control Room : maybe there is an unused stereo pair made available by your ASIO driver which isn’t visible, yet.


Yes, this is totally correct and I also recommended it:

And it happened automatically here:

The port was already in use by the Outputs. Once roderickdav confirmed the message, the Outputs has been set to Not Connected.

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That’s correct.

I currently only use monitors and don’t have any phones. I’ve previously only used Cubase to compose, and only just started learning about production so for now I’ll stick to monitors. I didn’t know before what control room is for, so I learnt some valuable lessons. Thanks again Martin and cubic13.