with those settings you are simply increasing the volume since you are adding 2 voices that play the same pitch to the signal. If you turn down mix to -50% you are only hearing the original signal hence no volume boost.
Yeah, i get that....but there is a second voice. Even though it's @ 0 mix, doesn't it add a subtle "doubling effect? I mean, if it's 2 voices, that would seem logical. Or is it just a placebo effect?
What are your settings for that boost function?
V1-Unison
V2-Unison
Key-E(Dbm)
Balance-0
Mix-0
Stere-0
Ducking-0
Volume-0
In all actuality, this is probably on par with putting a treble booster in the X-slot. But there just seems to be something a little more organic to using the Harmonizer. Ymmv.
Was fiddle fekkin around with effects today and just happened to stumble on how nicely the Harmonizer is as a boost in the X slot
...even with just the factory preset.
It may just be me but, check it out, if you havent already.
I haven't updated to the latest OS yet but I have run into similar audio issues with previous recent updates. The Kemper team claimed that there shouldn't be any changes to sound, but my ears say different.
I always do a back-up (on thumb drive) of my Kemper before I do any OS updates. And this has helped me a time or two when, after the OS update, something just didn't sound right.
If something doesn't sound right, I just restore my back-up file and all is good again.
This has worked so far, for the couple of times I've had to do it.
I have never taken the time to dig into see exactly what had changed after the OS update.
Yes i did test it, and its not only the effect presets much more problematic are output presets and cab presets or amp presets.
And yes I don´t like new features if they are not agreed with the customer.
For professional use, consistency and reliability are much more important than new fancy features.
In principle, updates should fix errors and not add further sources of error.
Why not read the change log before you update?
If you dont like the changes being implemented, don't update your device.
Digitech GSP1101 w/ Control 2 into Two Notes Torpedo Live...direct to FOH. Done 
Greetings to all in Kemper World!
Stage user here.
If the Tap button is assigned to an effect or stomp, it would be most helpful if the Tap LED would indicate on/off status.
That being said, the same request would also apply when assigning stomps/effects to the Looper and/or Tuner buttons.
I know this has been requested before, so my apologies for any redundancy.
But now, more than ever, with each addition of more effects/stomps, this is becoming more of an issue. And it will only continue to be exacerbated with each new update that includes any additional presets.
Caveat: This wasn't an issue for me UNTIL the latest release of Fuzzies! Now I'm addicted to using the Preamp Fuzz preset as a boost/od and needed a button to assign it to so I had to assigned it to the Tap button.
Damn you CK for making this ridiculously great machine even greater! 
Thank you for all you do!
i had a similar issue awhile back.
I went into the system settings and cleared the button that was giving me issues. If memory serves me correctly, mine was the MOD button as well.
Once I cleared it and set up the preset again, all has been well.
Hope this helps.
Thanks for the replies everyone. I agree this method is a hassle but it seems like the only one that will work for me, for now. I'll just add a bass prefix to the bass rigs so that they are all bundled together. At the same time though, it's odd to me that a "just guitar" filter is not available similar to the "just bass" filter. I just got the Kemper 2 months ago and I LOVE IT but for it to not have a such a simple function is kind of disappointing.
If only there were a Bass Clef symbol to use. That way you'd only be taking up 1 character space. Maybe suggest that (along with a Treble Clef) for the next update?
I've always wondered why there is a "?" character in most devices
. Replace that sucker with a Bass Clef! 
Display MoreI don't think you guys are getting it.
Brother Sludgie, using your suggested methodology, he'd have to favourite only bass Rigs and never guitar ones. Not-practical, I'm afraid. Good thinking 'though IMHO bro'.
Indeed Troy, it would make them easier-to-find, but name-character space is limited, especially if you want to be able to view the titles on the units themselves. Believe me, I've had some experience with this, having been forced to devise a naming convention for the Wah collection. Many compromises were necessary in order to come up with a system that said just-enough but that also happened to fit within the display window without the OS's imposing its default truncation to the names.
In this case, IMHO, it may be a lot of work for Jake to shorten the names of his Rigs in order for them to appear as-is in the display whilst still accommodating the "Bass-" prefix.
If one has a bunch of guitar as well as bass Rigs on one's unit, IMHO it should be a no-brainer to be able to filter either flavour out en-mass. That's what the function is for, after all, and the existing behaviour suggests that an assumption was made that the typical user would have many guitar and very-few bass Rigs on his unit. However for bass players it'd be the other way around in many cases.
We've seen the recent addition of the "Acoustic" filter's being added, hence my decision to support this tweak with a big +1.
Indeed, that makes total sense MM.
Maybe i'm not understanding correctly, but couldn't you just name your rigs "Bass-..xxx"
or "Guitar-..xxx"
and then filter alphabetically to find them?
I'm not all that into fuzz so I don't know what to do with most of these, but I'm definitely diggin' the Preamp preset. In front of a clean amp and bump the Drive up to 5, it's classic ZZ Top.
Very nice indeed.
The easiest way to see what all is locked is to just hold the lock button down. Everything that is locked will light up.
Not knowingly...I don’t think I would know how to lock them
do you have the amp or input sections locked?
Audient id4 with JBL 305's here.
I have experienced this too. I have found that a heavy hand and a stiff attack are contributing factors for me.
I dialed back the Clean Sensitivity and swap to a thin pick and that has mostly cured it.
I still get carried away sometimes and can still generate some of those pops. But for the most part it is now a non issue.
Other than being heavy handed and using a 1mm pick, the only other contributing factor could be hot pickups...which i also use.
Hope this helps.
~Troy
I use a Shure GLXD system. (The floor model with the footswitch/tuner)
Works fantastic. Haven't had any issues.
I wouldn't go throwing money at an expensive IEM set-up and expect miraculous results.
If you've tried multiple different headphones and they all sound bad, there may be other issues at hand.
I have a 30yr old set of cheapo Sennheiser eh150 headphones that I bought new for like $100 in the early 90's. The foam pads are so deteriorated that they leave black crap all over my ears after I use them......BUT....they sound so good, that I've never felt the need to upgrade. They translate extremely well to what I hear through my desk monitors and as well as my PA speakers.
That being said, for live use, I use a Mipro Mi909 system with Westone UM Pro30 IEM's. That is a killer, relatively budget friendly, set-up too.
