Don't panic - something is wrong!
The KPA sounds great!
All you need are three things:
Step 1) The KPA
Step 2) A great linear speaker system
Step 3) The right profiles for YOUR guitar and style
Yes, it works more or less good with guitar speakers
Yes, it works more or less good with not so decent monitors
But the real fun is to work with great linear speakers and the right profiles!
Detail for Step 2) A great linear speaker system
How can I check if the reason for not so great sound is my monitor / studio speaker / PA?
This can be checked very easy!
Grab your favorite CD and play it via your monitor / studio speaker / PA!
If you like the sound - great - done!
If you don't like the sound - don't waste your time to find the "best profile" and don't complain about the KPA - your monitor / studio speaker / PA is the problem!
You will waste a lot of time to find "great profiles" for your system and even to tweak all your profiles may be a waste of time.
In this case you compensate the problems of your system with bad profiles.
e.g. your system delivers very little bass - then you may like very boomy profiles or tweak your profiles to be very boomy - it may sound fine on your system - but the recording may sound like shit - and when you ever update to a decent system - all your work was in vain.
So go and find the error in your system - or upgrade it - then read on.
Details for Step 3) The right profiles for YOUR guitar and style
(Did you read and fix step 2 first?)
There is no "best profile" forget the search!
A great profile of a vintage amp will not help you when you love metal.
And a metal profile may sound bad for blues.
But this is not all.
Each guitar is different - and the fingers of the players.
That's why all great tube amps have some knobs - some a lot of knobs.
It's not possible to create a 3 channel amp and only provide this:
-The channel switch
-A volume control for each channel
Yes, that's easy to understand ...
... but why are so many KPA users searching for "that one killer" profile of the first channel of amp xyz?
Best would be to have the real amp in front of you - turn all the knobs and switch all the switches of the amp until you find a great sound for each channel of this one amp - and then profile this amp setting - done - the perfect profiles for your guitar from this amp.
This set of profile will most likely sound decent for other users with the same guitar - and taste.
But .... may sound bad for most other guitars!
So we may need a set of profiles for each of our guitars!
And everybody needs another set of these profiles!
We need a lot of profiles of each channel of an amp - with different settings (drive, tone stack, switches, ...) and then select the best profile for each channel for each of our guitars!
This work has to be done to get total satisfaction!
Then all other profiles of these amp can be erased from the KPA and stored for later - when another guitar should be used or another type of music played.
Now - and not before - can we use the KPA knobs to "fine tune" the profiles to our taste.
It's so much fun to do this work and get finally 100% the sound we are looking for.