Kemper Profiler MK 2

[2dor]

It's speculation, but I believe the regular Kemper profiling fills out a bunch of parameters in a very flexible amp sim and then EQ matches. Something of that sort.

That can be very fast. But the kind of machine learning tonex does requires a lot more horse power.

Then again, I wonder how the new profiling works, if it's really that different from before, assuming the above is correct. Considering how quick it is, I would imagine it's based on some similar underlying tech, but maybe a more developed version of it?

But again. Speculation to the max.

I've read that hypothesis on a few forums along the years but we don't really know for sure what's going on under the hood.

In truth, I think users shouldn't really care & I'd be firmly planted in that camp if the results are consistently faithful to the source.

 

[dws2384]

No refining, and quicker profiling than before. Compare that to how long it takes for tonex to capture even with the update (especially with some processors).

Sure but let’s hold off to see how good it is. There’s likely a reason why NAM and Tonex take the time they do. They are very very accurate. Nothing is a free lunch.

 

[Dimiguitar]

I've read that hypothesis on a few forums along the years but we don't really know for sure what's going on under the hood.

Sure. I don't think anyone outside Kemper knows for sure.

It's just that when I got into EQ matching, I saw how easy it was to match a lot of amp sims to the source that way.

It made sense to me if Kemper had automated other things, like the right levels of gain. Aside from that, EQ matching can go very far.

In truth, I think users shouldn't really care & I'd be firmly planted in that camp if the results are consistently faithful to the source.

I care, to some extend, mostly because it's interesting to see how different units accomplish things.

But I don't think users should be put off by the Kemper approach, assuming it's even what some think it is, if results are great.

 

[BenIfin]

.... They are very very accurate. Nothing is a free lunch.

Not trying to flog a dead horse, but only in terms of a Null Test. There is a lot of other factors that are way more important.

 

[Chocol8]

The time it takes to train a capture isn't going to be a deciding factor for a lot of buyers and liquid profiling isn't really a killer feature either. It is attractive to people with a modeler mindset, but not really a game changer as far as the ability to get a good tone.

Kemper is going to have to deliver something a little more significant to stay relevant, but I still see little evidence that they even want to. I think the Virus is the best evidence of Kemper's business plan.

 

[ChordInversion]

This was yesterday in our booth, about an hour after Christoph introduced me to his family and an hour before we grabbed a beer in the Kemper booth:
View attachment 52531

People really underestimate the degree of camaraderie that exists in all manner of industries among presumed competitors. I find it admirable and the sign of a healthy approach to excellence. IMO (and as a player), each product has a different set of focal points that suit different players or different needs of players. I currently have an FM9, a Tone Master Pro, a GT-1000CORE, and an ACS-1. They all get use for different purposes. I'll be selling my Tonex and probably not getting a Kemper, as profiling/capture just isn't for me. I'll be adding a Stadium next year (presuming I've made a decision on employment by then, which is highly likely).

 

[BenIfin]

- 36 seconds profiling time.
- no refining
- PC required for new 2.0 profiling
- 2.0 profiles can be liquid profiles
- on-the-unit profiling can still be done
- supposedly doing back-to-back 2.0 and legacy profiles shows a noticeable quality / accuracy difference between the 2

The idea about keeping the input stage properly set and hence using the hardware Kemper is pretty clever imo.

Well it's what having the same hardware does. That's why stuff like ToneX and NAM desperately rely on proper signal calibration for a good user-experience across different chains. Kemper (and Quad Cortex as well) have the benefit of the hardware underlay which is consistent.

Really intriguing developments! Sounds like it’s going to be an improvement in all kinds of ways in terms of the profiles themselves.

No refining, and quicker profiling than before. Compare that to how long it takes for tonex to capture even with the update (especially with some processors).

If those claims are true + liquid profiles, Kemper's gonna get a new lease on life.

The plot is starting to thicken up very nicely ...... bring on the "classic" vs "2.0" profiles of the same Amp comparisons !

 

[Jarick]

The time it takes to train a capture isn't going to be a deciding factor for a lot of buyers and liquid profiling isn't really a killer feature either. It is attractive to people with a modeler mindset, but not really a game changer as far as the ability to get a good tone.

Kemper is going to have to deliver something a little more significant to stay relevant, but I still see little evidence that they even want to. I think the Virus is the best evidence of Kemper's business plan.

Disagree on liquid profiling I think that’s still a really great feature. Having one or a few profiles to cover the range of an amp over having a couple dozen is huge. Especially if the profiles are well made so the gain scales properly.

I do think UI is going to be much more of a driving factor for success than profile accuracy. I’ve said before but Tonex is smaller and cheaper for standalone modeling and QC is better to use for a modern UI.

 

[Jarick]

If the profiles are being made on the computer I’d think they could figure out batch processing. That one question I have as well. Shooting a bunch of profile input capture and then batch processing would really nice. I do think there’s less need for that though with liquid profiling as you’re typically not needing to shoot dozens of profiles to capture the range of an amp.

 

[Digital Igloo]

People really underestimate the degree of camaraderie that exists in all manner of industries among presumed competitors.

100%. Have known Christoph since 2017, have been good friends with Jason Stillwell (Tone Master Pro's PM) for ~25 years, and I'm ex-Roland/BOSS, so I know and adore a bunch of people there. The Atomic guys are awesome and M@ and Cooper at Fractal are super cool, but I haven't yet met Cliff; would love to buy him a beer one of these days.

I won't lie and say a few companies' executive staffs aren't littered with a few crypto dude bro-like narcissists who step on people and pull shady $#!‡ to get ahead. But this industry talks and we all pretty much know who they are.

 

[BenIfin]

If the profiles are being made on the computer I’d think they could figure out batch processing. That one question I have as well. Shooting a bunch of profile input capture and then batch processing would really nice. I do think there’s less need for that though with liquid profiling as you’re typically not needing to shoot dozens of profiles to capture the range of an amp.

I spent 6+ months with a MK1 Stage using only respected profile maker LP's and they were magnificent at giving you very real, very amp like gain and very amp like eq adjustments over the full range of controls ..... I posted several clips back then demonstrating how much better than non-LP's it is.

LP's with the new 2.0 profiling *should* i.m.h.o be several stages even better ... time will tell.

This is in direct contrast to the total clusterfuck that is the generic gain and generic eq stacks in Tonex / NAM which just sound shitfull once you move them away from their "12.00 " profiled setting ... and that's not even mentioning how all over the shop gain-staging Tonex / NAM is.

With my HX and GP 5, all my NAM Captures are always left stock ... any gaining up or down or eq'ing is done before and after the Capture.

I quietly confident CK may be about to shut-up several people about how what sounds and feels best across the full range of real amp controls as opposed to what null tests the best .... and yes, I know about "parametric NAM captures" ... but these are nothing more than X number of static NAM captures sewn together with a fuck-ton of interpolation ... whereas the LP process combines profiling with component models of real Amp gain stages and real Amp EQ stages.

 

[Orvillain]

these are nothing more than X number of static NAM captures sewn together with a fuck-ton of interpolation

Right, but you understand what that actually means right??

The finer grain your captures, the more accurate to the real thing your entire model is. Let's say you take two captures and you linearly interpolate between them... hello 1980's ... but let's say you take 1024 captures, with a variety of knob positions, and you know and can label each capture with the right meta-data so that your NN system can train the model accurately... and you're interpolation type is of a high quality (IE: something non-linear, that takes more than 2 data points to recreate the interpolated value) then you're simply going to get something that is very accurate to the input.

That is not true with the genetic approach that Kemper and Headrush and others use.

 

[Jarick]

The one reason I think Kemper may really struggle on the capture market is that so many guys running capture devices are running large pedal boards into stereo Tonex One which combined are less than half the cost of a single Player. On the software side there’s no Kemper plugin where there is a Tonex. And then for all in one units the QC is a much more modern device.

So it’s very possible Kemper may win the null test battle (at least for now) but may still lose the current modeling war.

I’m still going to hang on to my Player to see how it all shakes out and test for myself.

 

[Orvillain]

If the new firmware delivers what it promises, I'll be interested to check it out. There's still a fair amount about the Kemper that I don't think really suits my needs, but if this area is improved, it will be very good for them.

 

[quadgear]

That is not true with the genetic approach that Kemper and Headrush and others use.

I don't think Kemper uses genetic algorithms. It's deterministic, right?

 

[2dor]

I don't think Kemper uses genetic algorithms. It's deterministic, right?

Yes - CK actually called it deterministic in the vid above.

 

[Orvillain]

I don't think Kemper uses genetic algorithms. It's deterministic, right?

Regardless, my ultimate point is, the idea that sewing together a bunch of static captures and interpolating between them is somehow inferior to Kemper adding component modelling to their own band-limited capture method... well, that's just nonsense. Parametric captures are the most thorough way to get towards a model of a real thing, outside of component modelling the whole thing.

 

[Chocol8]

I think it is a bit of a stretch to call liquid profiling component modeling. It's applying different tone stack behaviors, but have they said it's actually modeling the tone stack at a component level and also the interaction with the different pre-amp stages before and after at a component level? I would be absolutely shocked if it was component modeling for a number of reasons.

 

[northcountry]

You can find the Kemper patents online. Here is a recent one: https://patents.justia.com/patent/12289586

It's very jargony and drafted to be the broadest possible, as patents usually are. But with a little AI help, the basic concept is:

The core model is “EQ → non-linear wave shaper → EQ.”

Kemper’s patents describe a sound converter made of two linear filters (simple EQ-like blocks) with a simple nonlinearity (a gentle waveshaper) sandwiched between them. The clever bit is how those two filters are derived from your real rig: the Kemper analyzes the amp/cab at a low level and at a high level; it uses the high-level spectrum for the second (post) filter and the ratio of low/high spectra for the first (pre) filter. That combination captures both the amp’s basic tone and how it changes when it’s being pushed.

Take it with a grain of salt because it's an AI-generated description, and there are more details to it, including refinement through liquid profiling, etc. I think the black boxes used by the others take the input signal and train a neural network that keeps adjusting itself until its output matches the real amp as closely as possible.