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.
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Isnāt 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 donāt need to 'turn off power amps" but just use the preamps straight ahead with physical power amps.
Welcome, BTW 
I think you are confusing Quad Cortex with the Helix. The Helix has preamps.
Hereās the latest device list and there are just amps, no preamps:
Itās 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!
You are thinking of the Helixā¦ 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 āplanned updateā 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.
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I asked this very same question in email to their support.
Hereās what I said:
**Hi there, **
Iād 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 āpre-FXā processor, āpost-FXā 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.
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If you disable the cab youāre still getting poweramp modeling. So Iām guessing they expect you to use a clean/flat/linear/whateveryoucallthat poweramp, otherwise youāre 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.
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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 ampās 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?
If you want to turn off all the cabs globally or IRāS go to settings. Iām
not on the quad at the moment so youāll 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 donāt have to do it for every preset. The other question I donāt know because I donāt use preamps on the QC. Sorry. Good luck.