# 1 Expression for Wah & Whammy **URL:** \ **Category:** Quad Cortex\ **Created:** [August 25, 2022, 12:15pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984 "2022-08-25T12:15:20Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![aiacobellis](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/aiacobellis/32/2427_2.png) [@aiacobellis](https://unity.neuraldsp.com/u/aiacobellis)\ **Post date:** [August 25, 2022, 12:15pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/1 "2022-08-25T12:15:20Z")
I work with Stomp Mode. I have only one exp pedal, and I want change from wah to whammy … there is way to do this ? Momentary Footswitch for Whammy is not possible in the Quad Cortex ? ---
**Author:** ![MP\_Mod](https://avatars.discourse-cdn.com/v4/letter/m/ccd318/32.png) [@MP\_Mod](https://unity.neuraldsp.com/u/MP_Mod)\ **Post date:** [August 25, 2022, 1:56pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/2 "2022-08-25T13:56:32Z")
Hi @aiacobellis and welcome to the community! There are expression pedals that have additional switching that accomplishes that task. Email [support@neuraldsp.com](mailto:support@neuraldsp.com) with specifics on your expression pedal model/version and what you are specifically looking to accomplished and they will get your sorted quickly. ---
**Author:** ![2342](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/2342/32/3098_2.png) [@2342](https://unity.neuraldsp.com/u/2342)\ **Post date:** [August 25, 2022, 2:00pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/3 "2022-08-25T14:00:52Z")
I don’t have the QC in front of me right now, but you can assign one footswitch in stomp mode to turn one of the blocks on and another block off at the same time. So with one footswitch you could toggle between wah and whammy, I guess. ---
**Author:** ![aiacobellis](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/aiacobellis/32/2427_2.png) [@aiacobellis](https://unity.neuraldsp.com/u/aiacobellis)\ **Post date:** [August 25, 2022, 2:14pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/4 "2022-08-25T14:14:51Z")
The problem is that my Expression is AutoReturn, and is activate the Wah Stomp. But I cant find how to disable wen I switch the whammy. ---
**Author:** ![HonestOpinion](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/honestopinion/32/3398_2.png) [@HonestOpinion](https://unity.neuraldsp.com/u/HonestOpinion)\ **Post date:** [August 25, 2022, 8:45pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/5 "2022-08-25T20:45:30Z")
@aiacobellis I see your issue. If you have both the whammy and the wah set to auto-engage, then the moment you pass the engage threshold on the expression pedal, **both the whammy and wah blocks turn on**. This applies even if you have both blocks assigned in opposite bypass states (on/off) to the same footswitch. I have not found a way to work around this yet. I don’t think the firmware is smart enough yet to do one of two things. One option would be to honor the blocks’ on/off states, based on how the whammy & wah blocks were saved in a scene, such that auto-engaging the pedal would only turn on the block that was saved as active in that scene. A second option, and one that I hope comes to the QC some time soon, would be to allow expression pedal assignments to change between scenes. Of course, this second option wouldn’t help your use case as you run in Stomp mode. The expression pedal control implementation on the QC appears to be extremely limiting and in need of enhancement. I am a new user though so maybe I am missing some configuration option that allows more flexibility. Hate to say it but if you are going to use auto-engage, and want to switch control between two blocks blocks within a single preset/snapshot, your best option as of firmware 1.40 might be to use two expression pedals. ---
**Author:** ![2342](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/2342/32/3098_2.png) [@2342](https://unity.neuraldsp.com/u/2342)\ **Post date:** [August 26, 2022, 4:58am UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/6 "2022-08-26T04:58:44Z")
Another option would be to run both blocks in a parallel configuration and switch between them by controlling the mixer settings by foot switches. It should be possible in scene mode. Probably not in stomp mode. ---
**Author:** ![bluzdog](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/bluzdog/32/5660_2.png) [@bluzdog](https://unity.neuraldsp.com/u/bluzdog)\ **Post date:** [August 26, 2022, 3:18pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/7 "2022-08-26T15:18:40Z")
Complete newbie here but this seems like a good case for hybrid mode. Switches A-D in stomp mode and switches E-H in scene mode with a wah block in one scene and a volume block in another scene. There’s a feature request thread for hybrid mode here: [Hybrid Mode: Top Row = Presets/Bottom Row = Scenes](https://unity.neuraldsp.com/t/hybrid-mode-top-row-presets-bottom-row-scenes/4116) ---
**Author:** ![HonestOpinion](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/honestopinion/32/3398_2.png) [@HonestOpinion](https://unity.neuraldsp.com/u/HonestOpinion)\ **Post date:** [August 26, 2022, 7:24pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/8 "2022-08-26T19:24:52Z")
Agree, hybrid mode is core functionality, but I don’t think it will allow for what @aiacobellis is trying to do unless they address how the expression pedal(s) works within and across scenes. I was working on trying to get a MIDI loopback technique working on the QC that allowed switching between wah and volume via footswitch instead of toe-switch. When using MIDI loopback you can do this even with an expression pedal that has no toe-switch by switching via a _footswitch_ sending a MIDI command. When it works, the loopback trick can allow the volume block to stay on when switched to wah. The critical and differentiating benefit of this is that _the volume block can retain its current value instead of being left at max_, and the volume block is not changed by the pedal sweep when you are using the wah. When switched back the volume is controlled by the sweep, but not the wah. Using the standard method - an expression pedal toe-switch to switch between wah and volume has the downside of leaving the volume at max when you switch. Couldn’t seem to get the MIDI loopback trick functioning on the QC because there seemed to be no way to get the QC to stop sweeping on both wah and volume at the same time. This technique requires that both the wah and volume blocks be on simultaneously, but control of the sweep on volume and wah blocks to be passed back and forth via footswitch. I posted a preset and the technique for setting this up at one point on the Helix forum. If anyone figures out how to pull that off on the QC, please post it up. As of firmware 1.40, I could not get it to work. Anyway, that effort was what clued me into some of what appeared to be current limitations on switching control via the expression pedal from one block to another. That same type of limitation also appears to be impacting @aiacobellis’s effort to get auto-engage to switch back and forth between wah and whammy. I suspect this will be remedied in an upcoming firmware revision. Hope it is the next one. ---
**Author:** ![JonOrBattleship](https://avatars.discourse-cdn.com/v4/letter/j/46a35a/32.png) [@JonOrBattleship](https://unity.neuraldsp.com/u/JonOrBattleship)\ **Post date:** [September 30, 2022, 7:35pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/9 "2022-09-30T19:35:39Z")
It’s too bad that this doesn’t work in scene mode… ☹ womp womp. ---
**Author:** ![Selendis](https://avatars.discourse-cdn.com/v4/letter/s/97f17d/32.png) [@Selendis](https://unity.neuraldsp.com/u/Selendis)\ **Post date:** [June 8, 2023, 8:34pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/10 "2023-06-08T20:34:45Z")
Has anyone figured out how to stomp between modes for a spring loaded retracting expression pedal? I too want to be able to switch between a whammy let’s say and a delay mix or wah pedal. With only one row left, I can split my signal going into a EQ doing nothing into the whammy and then programming the EQ mute function to a stomp, so the signal doesn’t go into the auto engaging whammy. There is no way to split twice in a single row so I can’t do it for a wah also… ---
**Author:** ![JonOrBattleship](https://avatars.discourse-cdn.com/v4/letter/j/46a35a/32.png) [@JonOrBattleship](https://unity.neuraldsp.com/u/JonOrBattleship)\ **Post date:** [June 20, 2023, 8:58pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/11 "2023-06-20T20:58:39Z")
Yeah you can’t use the auto engage. I got around it by creating separate scenes, but that causes issues since for the most part the auto engage isn’t a thing. You have to hit a switch and then your exp pedal. ---
**Author:** ![aiacobellis](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/aiacobellis/32/2427_2.png) [@aiacobellis](https://unity.neuraldsp.com/u/aiacobellis)\ **Post date:** [July 4, 2023, 1:47pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/12 "2023-07-04T13:47:51Z")
I think this is our solution … > **[Expressionator - Mission Engineering](https://missionengineering.com/shop/expressionator/)** > > The world's first programmable multi-expression controller. Connect one expression pedal with up to three expression enabled effects and control them individually or simultaneously. Expressionator is a digital device that samples the input from a... ---
**Author:** ![xush](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/xush/32/5100_2.png) [@xush](https://unity.neuraldsp.com/u/xush)\ **Post date:** [July 4, 2023, 5:07pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/13 "2023-07-04T17:07:09Z")
_man, that thing is pricey and would require a lot of tap-dancing, but I like the curve/taper function- that could be really useful. I’m curious about the output though, it doesn’t seem to show the jack panel on the site. the QC only allows 2 XP assignments, how would IT differentiate what’s being sent to it from the Expressionator?_ **edit: after finding a pic elsewhere of the jack side, I don’t think this will work- each of the 3 channels has its own output, but the QC can only accept 2.** I guess if you only have a single XP and want to expand it to 2 it might be helpful, but you still have the issues of the QC XP assignments functioning the same as always ---
**Author:** ![HonestOpinion](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/honestopinion/32/3398_2.png) [@HonestOpinion](https://unity.neuraldsp.com/u/HonestOpinion)\ **Post date:** [July 4, 2023, 8:20pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/14 "2023-07-04T20:20:30Z")
Very cool device, thanks for posting, have never seen this before. As @xush mentions, an expensive solution. It also requires some additional pedalboard space. Hope they build the functionality we are looking for into the QC, but good to know this is out there as an option. If not for the QC, then perhaps for other modelers. ---
**Author:** ![aiacobellis](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/aiacobellis/32/2427_2.png) [@aiacobellis](https://unity.neuraldsp.com/u/aiacobellis)\ **Post date:** [July 5, 2023, 1:28pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/15 "2023-07-05T13:28:46Z")
Simple & Cheaper … could work ? > **[AMERICAN LOOPERS Stereo TRS A/B Box STEREO Line Selector Switcher | Reverb](https://reverb.com/item/5022333-american-loopers-stereo-trs-a-b-box-stereo-line-selector-switcher?utm_source=rev-ios-app&utm_medium=ios-share&utm_campaign=listing&utm_content=5022333)** > > If you want to take one TRS signal and switch it between two TRS outputs, then this is the pedal for you. The pedal also works in reverse for selecting between two TRS inputs to one TRS output. > > > \* You MUST TRS cables on all ends to make this... ---
**Author:** ![xush](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/xush/32/5100_2.png) [@xush](https://unity.neuraldsp.com/u/xush)\ **Post date:** [July 5, 2023, 1:48pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/16 "2023-07-05T13:48:00Z")
that seems like it would do the trick and wouldn’t require a power adapter unless you need the LEDs. Can I ask though, and maybe I’ve overlooked something (I read back thru the whole thread): 1. Is it possible for you to use the wah without the auto-engage setting? Like, would it work for you if you could turn the wah on and off with a switch on the QC? Same for the whammy. It would require 2 different switches on the QC in stomp mode. That way you could have them both bypassed at the same time, and not have to toggle between them with one switch. 1. Do you have to use stomp mode? Could you work w/ Hybrid Mode; 4 stomps/4 scenes? ---
**Author:** ![aiacobellis](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/aiacobellis/32/2427_2.png) [@aiacobellis](https://unity.neuraldsp.com/u/aiacobellis)\ **Post date:** [July 5, 2023, 2:04pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/17 "2023-07-05T14:04:10Z")
I use auto-engage & auto-return wah, vibe & whammy … that is the way I prefer. Could try with Hybrid mode … but I think don’t work because you cannot change in Scene Mode the Expression Pedal Fxs ---
**Author:** ![xush](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/xush/32/5100_2.png) [@xush](https://unity.neuraldsp.com/u/xush)\ **Post date:** [July 5, 2023, 2:25pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/18 "2023-07-05T14:25:26Z")
It would all depend on turning off auto-engage. If you can live with that, there are a couple ways it could be done. But if that’s non-negotiable then maybe that external device is the way to go. Would you be interested in trying a preset that doesn’t use auto-engage just to see how it feels to you? ---
**Author:** ![aiacobellis](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/aiacobellis/32/2427_2.png) [@aiacobellis](https://unity.neuraldsp.com/u/aiacobellis)\ **Post date:** [July 5, 2023, 4:01pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/19 "2023-07-05T16:01:53Z")
I can change expression assignment in Scene Mode ? ---
**Author:** ![xush](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/xush/32/5100_2.png) [@xush](https://unity.neuraldsp.com/u/xush)\ **Post date:** [July 5, 2023, 4:11pm UTC](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984/20 "2023-07-05T16:11:16Z")
no, it would have to bypass the 2 fx manually. Once XP is assigned, it’s always assigned for the whole preset. But without auto-engage you could turn on (and off) the wah with one footswitch, and the whammy with another footswitch. I’ll build it so you can try it out [Next page](https://unity.neuraldsp.com/t/1-expression-for-wah-whammy/7984.md?page=2)