Have you tried another (better) cable?
Any electromagnetic stuff in your house like computer , screen, refrigerator,
air conditioner, fan, WiFi, wireless phones, light dimmers, light tubes ....
Neighbors air conditioner, Tesla charger, railway, power plant ????
Have you tried to take your gear to a friend and test in his/her house/apartment ?
Just some thoughts .........
Cheers !
This is one of my many favorite LP´s from the 70´s 
Those "zero" profiles you got .... Are they any good ?
Wanna share them ??? 
Cheers !
Display MoreI guess, narrowing in is more efficient than brainstorming. Facts beat speculations.
In deed it sounds more like a phaser. As I see there is no active effect in the signal chain. I have no idea, how the PROFILER could be the origin of that issue.
Headphones connected to the PROFILER would be an easy test.
You could start at the HEADPHONE OUTPUT then try
Have you exchanged cables and guitar?
Have you tried to connect any other powered monitoring equipment instead of the Headrush?
What if you fed your smart phone into the Aux in of your PROFILER?
How is the Headrush connected and is this the only monitoring equipment connected?
Could it be that you have two XLR cables connected from the MAIN OUTPUT of the PROFILER to the two inputs of the Headrush and mixing those in the Headrush?
Oh , Ok . sorry for asking the "wrong" questions in an attempt to "narrowing in" on the problem ....
Also sorry for calling it "brainstorming" instead of "thinking out of the box" ..... My bad .....
I´m not offended, but how is my "speculations" worse than yours ?
We even ask the same thing about whereas he use 2 cables or one ?
"Facts beat speculations " ... Here´s one fact : Slot A in stomp box section IS ON .......
( Probably Gate )
But what do I know .... I´ve only played guitar for 50 years and worked as a professional
sound engineer for 30 (with my own P.A. ) so I guess I better zip it
And again, I´m not offended, just wondering what this forum is for, if not trying to help
and give ideas to each other ???
Cheers !
No effects on ?
Only one cable from KPA to the powered cab ??
Same "sound drop" with low volume ?
Same result with other rigs ?
Output settings on KPA ?
Input settings on cab ( if any ? )
Just Brainstorming ....
Cheers !
Funny to think how long it would take to turn on and warm up 836 amps!
I think the hottest thing in the house would be the fuse box .... 
Cheers !
Just one thought : maybe the number of "Stomp´s" in every Rig
affects the startup time as well ? ( More data to "sort out" ........ )
Not that I care , I´m in no hurry
Cheers !
maybe a few users could kindly share their boot times and the number of rigs stored internally (and OS version)
Why not .... 836 rigs 54 sek startup OS 6
I have "many" rigs because I use the KPA in my studio for other
guitarists and bass players and sometimes even keyboards
Tip : Compare your KPA startup time with your SmartPhone startup time just for "fun"
Cheers !
Well , some old tube amps take some time to heat up too
I´ve noticed that if I have 900+ rigs instead of 20 rigs in
the KPA , startup time is a bit longer , but then I start it a
little bit earlier, so it´s OK in the end anyhow
Cheers !
Speaking of Beatles , have you guys seen this ? Some "amateurs" having fun
So if you´re "grounded" due to Corona virus this is a good way to let a couple of
hours fly away ...... ( and there´s a part 2 too ) 
Cheers !
( Skip the first 4 minutes .... )
Sure but that was something new back then.
Of course , Beatles were pioneers in so many ways, and with "multitrack" (4 , then 8 tracks )
they really freaked out in new soundscapes and possibilities and made some fantastic music.
( and some not so fantastic .... ) 
Cheers !
Lennon always doubled tracked his vocals so Kurt Cobain adopted his practice as well.
And a million other singers too ....
Cheers !
At the end of the day, what really matters is if the profile / rig sound
good in our ears or not, with whatever guitars we use .... Or ???
And there are probably as much opinions on what a "good" sound is
as there are members on this forum
Cheers !
OS 6 here also . No problems and steady as a rock ( n´roll )
Reading about many users here at the forum who has problems
after upgrading OS and RM so I´m not eager to upgrade at all 
"If it works, don´t touch it"
Cheers !
Hi and welcome
Clean sense and Dist sense in input section is the answer .
Page 27 - 28 in the Manual . "Input Button" (2)
Main Manual at Download page :
https://www.kemper-amps.com/downloads/5/User-Manuals
Cheers !
Something to hum when vacuuming ? ( Google translate .... )
"Något att nynna på när du dammsuger"
Unnecessarily talented chaps from Sweden
Cheers !
Nice One thing though .... Your "claim" in the video description on U-tube :
"A song by the late great Stevie Ray Vaughn, called "Little Wing". "
How about Jimi Hendrix ?
Cheers !
Only thing I can think of is that people have getting better at
profiling their amps with mic placement and pre amps and so on ...
Hardware KPA is still the same "old faithful" though .......
Cheers !
Maybe a compressor can help ?
Or get a "Sustainer"pup like the one on some Fernandes guitars
Cheers !
Some dist / drive / boost pedals can be profiled ( not modulating ones ) but they must be in the right place
in the profiling chain : between the output from Kemper ("Direct out / Send" ) to your amp , speaker , and
into the microphone back to the Kemper ( "Return input" ) Result can be good but can also be crap
In other words : putting a pedal between your guitar and front input of Kemper will not profile the pedal .......
Cheers !
