Home › Forums › Products › Stompboxes › Mono in stereo out pedal in H90 Loop
- This topic has 17 replies, 7 voices, and was last updated 1 day, 8 hours ago by
tbskoglund
Eventide Staff.
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August 5, 2023 at 2:44 pm #172897
<p style=”text-align: left;”>Hi there. I’m a little confused on how this might work. I just got the Boss Dm-101 and right now am running it in mono. Works great. I would like to use it in stereo but it’s a mono in stereo out pedal. So I’m assuming I can put it in the loop out 3 and com back in on 3-4 is this correct?</p>
also how will that effect the stereo image in the device? For instance if I want to use the the DM 101 in between a stereo Chorus and Stereo reverb will the stereo chorus stay stereo, or flow through Mono coming out stereo through the DM-101? Thanks so much for your time and information! -
August 5, 2023 at 6:56 pm #172898
Sorry, this configuration is not supported for the H90’s inserts. The device in the insert loop should be either mono > mono when using a mono insert, or stereo > stereo when using a stereo insert.
If you set the insert to stereo, but only connect output 3 to the device, you will only be outputting the left half of the signal since the stereo insert is outputting a stereo signal.
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August 8, 2023 at 6:52 pm #172950
I am also hoping for this function. Signal chain:
bass -> H90 input 1
output 3 -> (mono in / stereo out) pedal -> inputs 3&4
outputs 1&2 -> stereo amp set up
output 4 -> dry amp
If this is currently not supported, is it a software issue that can potentially be resolved with a future update? Or is this a hardware issue, and there is no hope of this option with the current physical version of the H90?
On another note… currently, if you are running 2 separate amps for a w/d/w (and I assume also a wet/dry set up) and your using one of the inserts on the H90 to split the signal and send to the dry amp, when you bypass the pedal, you loose use of the amp that’s connected through the insert. Is there an expected update that allows the insert path to be always on, even if the pedal is bypassed, so your signal is always going through both amps? My hope is to be able to use my 2 amps for the tone I want, which works best when they are both used in combination, but then when I use effects, I want one of the amps to handle that, while the other keeps the clean tone. But I don’t want to loose use of 1 of the amps when I bypass the pedal. Is this kind of update possible and in the works?
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August 9, 2023 at 10:06 am #172965
Hello,
A Mono in > Stereo out insert is something that could be supported in a future update. I cannot confirm that this will be added or provide a timeline, but I can log your request.
Your second request is also something that could be supported in a future update, but I cannot provide any further information.
You can use the Preset A+B bypass instead of bypassing the Program, and that will keep your inserts in the signal path.
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August 9, 2023 at 4:52 pm #172978
Thank you for your reply. I will strongly request both of those updates to be priorities. I know… amongst ALL the other mounting priority requests lol. Y’all are doing GREAT!
For the program bypass work around, I had read about the solution you provided in another forum indeed. I’m still getting comfortable controlling the H90 on the fly in performance mode. It’s certainly doable, just not the most efficient method of control when trying to bounce back and forth between multiple programs in bank or select mode. I’m looking to get a midi foot controller at some point to hopefully make working in performance mode while still having access to multiple programs at the touch of a button, but for the time being, a program bypass with the insert always on option would be super convenient. Again, thanks for the timely reply and solution.
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July 19, 2025 at 9:06 pm #190967
+1
i also have a DM-101 I would love to connect to the loop of the h90
the stereo insert capability was the main reason I chose the H90 over the fractal VP4.
Didn’t occur to me mono in stereo out would be such a headache 🤕
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July 26, 2025 at 10:03 am #191123
Hello to everyone,
I have a Mono In —- Stereo Out pedal ( boss sy-300) too
So, what is the best way to set the H90 Inserts?
My guitar to H90 Input 1
H90 Output 1 to my guitar amp
H90 Output 3 to Boss SY 300 Input
Boss SY 300 Output to H90 Input 3
Is this correct?
If I understand correctly I cannot use a Stereo In > Mono Out H90 inserts, right?
Thanks
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July 26, 2025 at 9:16 pm #191128
Just chiming in to say that the UAFX amp sim pedals are all stereo and the four I have work great in the stereo insert. The Poly Ample, Walrus Mako, and Strymon Iridium are (or can be) stereo so I imagine they are fine in the stereo insert too.
But, besides the effect units discussed here so far, there also seem to be more and more amp sim pedals that are mono in and stereo out. Examples: Tonex, Tonex One, the three Friedman pedals, Tone King Imperial, Kemper Player, Nano Cortex, Boss IR-2 and Boss IR-200.
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July 26, 2025 at 10:09 pm #191129
+1
i also have a Tonex One – happy to use that as a mono insert, but would like to one day upgrade to the mono in stereo out Imperial Tone pre-amp you mention.
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July 28, 2025 at 9:08 am #191133
Although Mono In > Stereo Out inserts are not supported, you can use Dual Mode and this will allow you to accomplish the same thing with a different routing UI.
- Enable Dual Mode on the H90: https://cdn.eventideaudio.com/manuals/h90/1.10.7/content/edit-modes/routing.html#dual-routing
- Connect your guitar/instrument to H90 input 1
- Connect H90 output 1 to the mono input of your amp sim/effect pedal
- Connect the stereo outputs of the amp sim/effect pedal to H90 inputs 3-4
- Connect H90 outputs 3-4 to your amps/monitors.
- Use the Routing menu to determine where you’d like your H90 and external effects in the signal chain
This will allow you to run mono effects on the H90 before your insert, and stereo effects after the insert. The stereo/mono signals will all be handled correctly with this configuration.
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July 28, 2025 at 11:41 am #191141
Cool!
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July 29, 2025 at 7:17 am #191159
Boom 💥
thank you!
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July 28, 2025 at 1:39 pm #191156
Well, I will try it later
Thanks!
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August 18, 2025 at 11:30 pm #191598
Much better!
Using this method to run H90 pre and post ToneX with a Dm101 after it.
previously I was using two mono inserts but this works a lot better.
less latency and disable at the program level without affecting my amp sim.switching to dual mode did wipe all my presets which I didn’t use expect though.
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August 29, 2025 at 5:58 am #191820
Ok, I’ve been able to try it, finally.
It works, but I have a question: when I switch to Dual Mode routing, I lose my User Program Lists. Is there a way to transfer them into the Dual Mode routing?
Thanks
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August 29, 2025 at 6:37 am #191823
- Export your User List in Insert Mode.
- Switch to Dual Mode.
- Re-import that User List into the H90.
- Converted.
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August 29, 2025 at 11:06 am #191827
Hi Brock, thanks for your reply
Export Import from Insert to the Dual Mode now works fine!
I have one last doubt : I’m in Dual Mode routing because I want to use the H90 in my amp FX loop and I read that it is recommended in my four cable method.
Well, in the Routing menu I can choose different alternatives such as Path 1 Series, Path 1 Parallel, Pre/Post, Path 2 Parallel and Path 2 Series
my question is: since I’m in Dual Mode, why doesn’t it automatically set to Pre/Post? I see that under the Routing menu it starts with the “Path 1 Series” for every preset and I have to change it to Pre/Post manually
So, the answer is that I should save this routing setting for each preset?
Let me know. Thanks
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August 29, 2025 at 12:34 pm #191830
Glad to hear you got the routing conversion figured out.
Yes, you will need to save your preset routing as “Pre/Post” for each Program.
You may find that for some Programs you want 2 presets in the Pre Path, or 2 presets in the Post Path. There are many useful routing variations.
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