# Option to turn off power amp simulation **URL:** \ **Category:** Quad Cortex\ **Tags:** feedback, quad-cortex\ **Created:** [October 29, 2020, 5:35pm UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172 "2020-10-29T17:35:22Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![AlexB](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/alexb/32/1352_2.png) [@AlexB](https://unity.neuraldsp.com/u/AlexB)\ **Post date:** [October 29, 2020, 5:35pm UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/1 "2020-10-29T17:35:22Z")
Hello! A question for Neural DSP. Will there be an option to turn off power amp simulation? That would be nice if you want to use the Quad Cortex with a tube power amp and a cab. ---
**Author:** ![EbTuning](https://avatars.discourse-cdn.com/v4/letter/e/f14d63/32.png) [@EbTuning](https://unity.neuraldsp.com/u/EbTuning)\ **Post date:** [October 29, 2020, 8:36pm UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/2 "2020-10-29T20:36:01Z")
> [@AlexB](#): > > to Isn’t there a list of preamp simulations in the QC or am I confusing this with the Helix? With preamp simulations of all the modeled amps you don’t need to 'turn off power amps" but just use the preamps straight ahead with physical power amps. Welcome, BTW 😄 ---
**Author:** ![AlexB](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/alexb/32/1352_2.png) [@AlexB](https://unity.neuraldsp.com/u/AlexB)\ **Post date:** [October 29, 2020, 8:46pm UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/3 "2020-10-29T20:46:43Z")
I think you are confusing Quad Cortex with the Helix. The Helix has preamps. Here’s the latest device list and there are just amps, no preamps: > **[Quad Cortex Virtual Device List (October 2020)](https://neuraldsp.com/blogs/news/quad-cortex-virtual-device-list-october-2020)** > > This device list contains all of the virtual devices currently planned for Quad Cortex and their current status (October 23, 2020). Devices that are crossed out are devices currently in development that may or may not make it for launch. Any... It’s not a dealbreaker for me, but it would be nice to have the option to run the Quad Cortex through a tube amp 😊 Also, thanks! ---
**Author:** ![Elric](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/elric/32/1704_2.png) [@Elric](https://unity.neuraldsp.com/u/Elric)\ **Post date:** [October 29, 2020, 8:47pm UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/4 "2020-10-29T20:47:21Z")
You are thinking of the Helix… According to NDSP there is not a global on/off right now which kind of sucks but it did sound like you can turn it off individually (according to a comment dan\_ndsp made on a thread at the gear page). According to one of the earlier ‘planned update’ lists they are planning to do stand alone power amps which is a big one for me personally. This would allow you to use a preamp in the loop and add power amp and cab simulation with the QC. ---
**Author:** ![Joshaldanamusic417](https://avatars.discourse-cdn.com/v4/letter/j/898d66/32.png) [@Joshaldanamusic417](https://unity.neuraldsp.com/u/Joshaldanamusic417)\ **Post date:** [October 31, 2020, 8:14am UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/5 "2020-10-31T08:14:26Z")
I asked this very same question in email to their support. Here’s what I said: \*\*Hi there, \*\* **I’d like to be able to run my quad cortex through my fender twin. I saw that the outputs on the quad cortex are TRS not TS, Will I still able to run it through my guitar amp? Thanks** Neural: **Yes, you will be able to do so. You can use it as a “pre-FX” processor, “post-FX” processor, disable the cabsim to use a real cab, and many other methods.** Me: **Awesome. Would you recommend using an XLR to 1/4 TS cable?** Neural: **You can use a TS/TRS cable from the outputs 3 or 4. Otherwise, an XLR to TS from the outs 1 or 2 should work.** ---
**Author:** ![joris.griffioen](https://sea2.discourse-cdn.com/flex020/user_avatar/unity.neuraldsp.com/joris.griffioen/32/355_2.png) [@joris.griffioen](https://unity.neuraldsp.com/u/joris.griffioen)\ **Post date:** [November 2, 2020, 8:32am UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/6 "2020-11-02T08:32:20Z")
If you disable the cab you’re still getting poweramp modeling. So I’m guessing they expect you to use a clean/flat/linear/whateveryoucallthat poweramp, otherwise you’re doubling up. In general it would be really nice to get some global flexibility, for instance locking a block in the Kemper is a really powerful way to deal with all kinds of situations. ---
**Author:** ![cardosokilas](https://avatars.discourse-cdn.com/v4/letter/c/f9ae1b/32.png) [@cardosokilas](https://unity.neuraldsp.com/u/cardosokilas)\ **Post date:** [June 11, 2024, 3:41am UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/7 "2024-06-11T03:41:42Z")
Did you make any progress in your quest? I am having the same issue, since most captures (even the ones capturing only the amp with no cab) include the power amp, it is impossible to isolate the pre amp alone to run the QC into the return of a real amp, using the real amp’s power stage only, without stacking two power amps, the captured and the one i am using. Also is there a way to find only preamp captures without power amp backed in? ---
**Author:** ![Heretolisten](https://avatars.discourse-cdn.com/v4/letter/h/b4bc9f/32.png) [@Heretolisten](https://unity.neuraldsp.com/u/Heretolisten)\ **Post date:** [June 12, 2024, 6:09pm UTC](https://unity.neuraldsp.com/t/option-to-turn-off-power-amp-simulation/3172/8 "2024-06-12T18:09:59Z")
If you want to turn off all the cabs globally or IR’S go to settings. I’m not on the quad at the moment so you’ll have to look for it. You definitely can turn them all off if ur using a real cabinet which I am. It globally turns them all of so u don’t have to do it for every preset. The other question I don’t know because I don’t use preamps on the QC. Sorry. Good luck.