FAQ - Frequently asked questions

Profiler Head and Rack are including the same electronical circuits and running the same operating system.

Head and Rack offer identical inputs and outputs.

Rigs, Presets, even complete backups are interchangable.

There are no sound differences.

Because of space limitations two control elements are not available on the front panel of the Profiler Rack/PowerRack compared to Head/PowerHead: - the two direct access knobs for Modulation Rate and Intensity (instead you can open the Modulation Module to control these two parameters) - the LED rings for the four soft knobs below the display and for the VOLUME knob (values are indicated on the display instead).

PowerHead and PowerRack offer an addition SPEAKER OUTPUT to directly connect unpowered guitar speaker cabinets. That's the only difference! All other capabilities, line level inputs, outputs, .... are identical between powered and unpowered Profiler models. Powered Profilers have no feature limitations versus unpowered Profilers.



Height: 21.7 cm (8.54 inches) Width: 37.8 cm (14.88 inches) Depth: 17.3 cm (6.81 inches)


Height: 13.9 cm (5.47 inches), 3 HE (3 RU) Width: 48.3 cm (19 inches) Depth: 22 cm (8.66 inches)


Height: 7.5 cm (2.95 inches) Width: 42 cm (16.53 inches) Depth: 18 cm (7.09 inches)



5.32 kg (11.73 pounds)


5.00 kg (11.02 pounds)


6.5 kg (14.33 pounds)


6.18 kg (13.62 pounds)


2.9 kg (6.39 pounds)

Standby: >0.5 W Operation: Head/Rack 13-27 W, PowerHead/PowerRack 30-800 W

There are basically three options:

Either you chose one or two neutral (powered) PA-monitor(s) on stage. So called "FRFR" speakers (full range flat response) are similar. This way you leverage the flexbility of the virtual cabinets included in the Profiles and get a tone as close as possible to what the audience is hearing via the PA-system.

Or you chose a classical guitar speaker cabinet directly connected to PowerHead/PowerRack or powered via an external power amplifier (preferably mosfet or digital). In this case you switch off the cabinet simulation for the output driving this guitar cabinet specifically. Simultaneously you could send a stereo signal including cabinet simulation to FOH mixing desk. If you own a guitar speaker cabinet and like its sound, this might be an inexpensive option. However, you will always experience the same physical guitar speaker sound on stage.

If you are using in-ear monitoring you obviously need no cabinet at all and monitor the same sound as the audience.

Yes - and even better, you can have it both ways at the same time: Use the stereo XLR MAIN OUTPUTS to send your signal to the FOH mixing console, and use the dedicated MONITOR OUTPUT to feed your poweramp and physical guitar speaker cabinet with a signal that bypasses the cabinet simulation. Owners of a PowerHead or PowerRack can connect a guitar speaker cabinet to the SPEAKER OUTPUT.

The internal power amp delivers 600 watts at 8 ohms; however, the wattage will be lowered to 300 watts when used at 16 ohms.

The power amplifier provides sufficient headroom to avoid clipping, even with dynamic clean sounds. Very loud signals and transients will then be compressed by a nice, organic-sounding, soft-clipping circuit.

You should, however, use these 600 watts of power with caution - if you are running at high volumes and notice any indications of speaker distress, turn down "Monitor Volume" or "Power Amp Boost".

The Profiler Remote is the perfect companion for your Profiler and can be ordered via the Kemper online store.

Basic remote control functionality is available for simple applications with expression pedals and/or switches directly connected to the Profiler.

Sending MIDI it is possible to load Rigs in Browse and Performance Mode via program changes as well as switching effects on/off and controlling continuous parameters like for example "Pitch" via control changes. Please refer to the Reference Manual for more details.

In addition it is possible to control nearly all internal parameters with the 14-bit MIDI protocol NRPN. Please consult the MIDI Parameter Documentation for details.

The Profiler offers two and the Profiler Remote four sockets to connect up to six pedals, single or dual switches via TRS cables. For single switches TS cables are sufficient. 

All types and brands of expression pedals are supported. Analog volume pedals are not recommended.

Switches must be momentary (not latched).  The polarity can be adapted for each switch in the Profiler System Settings. Tube amplifier channel switches usually latch and therefore cannot be used.

In case you are using an expression pedal to control your Wah effects and rarely want to control your volume via pedal, you don’t need a second pedal. You can activate the Wah Pedal Booster in the X or Mod Module instead and use Wah Pedal to boost the signal. This is a Rig specific approach. You could also assign Volume Pedal as well as Pitch Pedal to your Wah Pedal globally in the System Settings. If a Wah effect is active in your current Rig your Wah Pedal will work as usual. If there is no active Wah effect, but a Pitch Pedal shifter in your Rig, the Wah Pedal will control Pitch. If no Wah and no Pitch Pedal effects are active, the Wah Pedal will function as Volume Pedal.

You could also define Morph Pedal as your master pedal and control Wah effects, pedal pitch effects as well as Rig Volume with it.

There are multiple options:

You could leverage the Volume Pedal to control Gain in particular Rigs. On page "Volume Pedal Settings" in the Rig Settings you are able to chose the position of the Volume Pedal in the signal flow ("Off", "Pre Stomps", "Post Stomps", "Pre Effects", "Post Effects"). If you select "Post Stomps" and set Range between 0 and +5 you are able to control the Gain of the Amplifier Module.

The parameter Gain can also be directly controlled via Morphing. So you could for example use the Morph Pedal to raise Gain from level x to level y in a particular Rig. 

Yes, the Profiler can send MIDI commands to up to two different external devices whenever Slots get loaded in Performance Mode.

You can configure the two external MIDI devices in the System Settings globally and edit the MIDI commands by Slot under "Edit"/"Slot Settings"/"MIDI Settings".

Please refer to paragraph "Transmitting MIDI Commands in Performance Mode" in the Reference Manual for more details.

The Profiler is an excellent tool for reamping either via S/PDIF or analog in- and outputs. Even no additional hardware is required as the internal circuitry is designed for connecting your instrument with studio environment. The Profiler offers two Input Sources optimized for reamping plus a parameter Reamp Sens. Please refer to the dedicated chapter about reamping in the Reference Manual.

The Profiler acts as master of the clock, please set your soundcard to 44.1 kHz and 24 bit.

If you have acquired a Profiler second hand you should create your own user account and register the device in your account like any new owner. Simply click on the small icon "Login" at the top right corner of the Kemper homepage and follow the instructions. At that time the former owner will receive a warning e-mail and owner priviliges will be transferred automatically.

The serial number can be found on a sticker on the bottom of the Profiler and is displayed on the last page of the System Settings.

In order to recognize and support the new Profiler Remote your Profiler needs to operate under operating system revision 3.0.2 Release at least. The latest operating system release can be found on the Kemper download page under Operating System Updates. If current operating system revision is higher than 1.8.2 you can upgrade to current revision in one step.

If current revision should be lower, you need to take one additional step and upgrade to 1.8.2 Release first. You find this operating systems under Legacy Operating System Versions.

Turning the BROWSE knob while a stomp is in focus you can browse through a list of Stomp Presets. Users are able to create and delete such Presets themselves. All parameters including the type of stomp/effect can be varied in a Stomp Preset. The preinstalled Factory Content includes such Presets for all stomp and effect types. These are often a good starting point checking out effects, because these Presets include meaningful settings.

Turning the TYPE knob while a stomp is in focus you are able to select one of the stomp/effect algorithms built into the software. You cannot create nor delete those. When you turn the TYPE knob all parameters are maintained except the type of the stomp/effect. This is an effective way to compare different effects types e. g. a phaser against a flanger while the parameter settings stay the same.

Turning the BROWSE knob you are browsing through a list of Stomp Presets. Users are able to create and delete Presets themselves. All parameters including the type of Stomp/Effect can be varied in a Stomp Preset.

Turning the TYPE knob you are able to select one of the stomps/effects algorithms built into the operating system. You cannot create nor delete those. When you turn the TYPE knob all paramters are frozen except the type of stomp/ effect. So it's an effective method to compare for example a Phaser with a Flanger without the need to dial in all settings again.

While Rigs include all Modules of Input Section, Stomps Section, Stack Section, plus Effects Section together, you can store Presets of any individual Module of the signal chain (Input, Stomp A-D, Amp, EQ, Cab, X, Mod, Delay, Reverb, Output/Master) or even the Stack Section. If you for example have Stack in focus and push the STORE button, you can choose either to store the entire Rig or capture a Preset just of the Stack Section. In order to load such a Preset in any other Rig, you just need to open the corresponding Module or Section (e. g. Stack). Then you can browse through the existing Presets and select one of those.

The Profiler comes with example Presets. However you could delete those or create your own. This is a very effective method to capture and leverage your favorite Rig building blocks.

Extremely hot guitars can generate unwanted distortion, indicated by a red Input LED. To prevent this, turn down Clean Sens a bit. Different types of guitars produce different output levels depending on their pickups and string gauge: for example, humbucker pickups generate higher voltages compared to single coils, and active guitars generate even hotter signal levels. If it bothers you that clean sounds are either very loud or very soft compared to distorted sounds, you can adjust Clean Sens to a level where clean sounds have the same perceived loudness as distorted sounds. Note: Clean Sens determines the volume of clean sounds, but not the way the amp or the effects are driven. If you feel that your guitar tends to drive the distortion too hot (or too soft) for the majority of Factory Rigs, calibrate your guitar by adjusting Distortion Sens accordingly. At zero (middle) position, every Rig will react as if you have plugged your guitar to the original amplifier. For individual adjustments of gain, use the GAIN knob, as usual.

A Tutorial video about the Input Section can be found on the Kemper homepage.

In addition to the noise gate in the Input Section (see The Basics Manual), there are two noise gates available as stomp effects, developed specifically with the hi-gain player in mind.

Whereas the noise gate in the Input Section is designed to preserve the guitar's dynamics exactly, the stomp noise gates behave like classical downward expanders. Downward expanders attenuate a signal once it has fallen below a certian threshold, and are often used to tighten complex metal-riffing. This is because a palm mute will still retain all of its "chunk", but will also become more percussive, thereby preventing the dreaded "mud". The two noise gate stomps feature different expansion ratios that were deemed the most musical.

Noise Gate 2:1 - This noise gate is a softer expander, with an expansion ratio of 2:1. That means, when the guitar has decayed to half its level below the threshold, it will be attenuated even more, resulting in a quarter of the original level. It is triggered earlier than the 4:1 gate, and the effect is more subtle.

Noise Gate 4:1 - This noise gate is a more aggressive expander, with an expansion ratio of 4:1. When the guitar has decayed to half its level below the threshold, it will be attenuated even more, resulting in one eighth of the original level. It is triggered later than the 2:1 gate, and with a more aggressive effect.

For any of these noise gates, there are no attack or release controls, as we have selected the shortest possible times without introducing any signal degradation. The attack time is 0.05 ms while the decay time is 50 ms.

Yes, this is especially convenient for Rack and PowerRack users. You need to select the ALTERNATIVE INPUT as your Input Source in the Input Section. This setting is global and not included in any Rig. Even with this setting the ALTERNATIVE INPUT will only function as guitar input if no jack is plugged into the Front INPUT. It is not possible to use these two guitar inputs simultaneously.


Any Studio Profile consists of an Amplifier Profile and a Cabinet Profile. Therefore it is possible to virtually combine amps and cabinets as you like or even play an Amplifier Profile through a physical guitar speaker cabinet. You could also use the Cab Maker application to transform cabinet impulse responses into Profiler Cabinet Presets, which you could then import and combine with any Amp Profile.

You can set the Favorite flag for any Rig currently loaded by either pushing the RIG button for about one second or by pushing Soft Button 2 "Favorite" in the Rig Settings. In order to deselect a Rig, just repeat the process.

Favorite Rigs are indicated by a small "*" on the right side of the Play Page. The Favorite flag is owner specific! So if you share your Favorite Rigs with other users, these don't automatically become their Favorite Rigs. Consequently if you change the Owner Name in the System Settings or via Rig Manager, your former Favorites will not show as Favorite Rigs anymore. However the information isn't lost. As soon as you return to the original Owner Name, the corresponding Favorite Rigs will get listed again.

Favorite flags can also be edited via Rig Manager. There is another important option "Auto Favorite" in the System Settings. If your prefer, that every Rig you store will automatically be flagged as your Favorite, please select this option.

When you chose the View "My Rigs" those Rigs get listed, where the tag Rig Author matches the tag Owner Name.

You should have entered your Owner Name during the Startup Dialog, when you started your Profiler for the very first time. However you can always go back and change the Owner Name pushing soft button "Edit Owner" in the System Settings.

Whenever you create your own Profiles this Owner Name will be set as default for the tags Rig Author as well as Amplifier Author and Cabinet Author. You can change the Rig Author later in the Rig Settings or via Rig Manager. However, the tags Amplifier Author and Cabinet Author can not be edited via Rig Manager, but only in the Profiler's Amplifier and Cabinet Modules.

The Profiler operating system includes a hidden selection of Rigs and Presets. This selection is preinstalled on every Profiler leaving the factory. And that is what you find in the Browse Pool, when you start your Profiler for the very first time. Should you have deleted any of these preinstalled Rigs or Presets, simply press "Factory Rigs" in the System Settings and all missing Rigs and Presets will be recovered in one run.

As features emerge and new Rig Packs get released, the selection included in the operating system is reviewed and revised from time to time.  For example operating system 3.x includes different content than its predecessors. So after upgrading the operating system your could use "Factory Rigs" in order to import new Rigs and Presets. None of your existing data will be lost. Only Rigs and Presets currently not stored in your Browse Pool will be added. If you prefer to pick and chose Rigs and Presets to be imported you could download the current Factory Content from the Kemper download page.

While we are occasionally adding new Rigs to our operating system, we are also performing some clean-up work from time to time, so that the content and os file doesn't get too big. Rigs that we have taken out are available on our download page as "Legacy Rig Packs".

There are three methods to create new combinations of existing building blocks:

For a temporary test the Locking feature is most effective. You can lock Modules of the signal chain e. g. Amplifier, or a whole Section e.g. Stack or even multiple Modules and Sections e. g. just leaving the Cabinet Module unlocked. When you now browse through the Rigs, you can test new combinations without making permanent changes.

In the Stack Section you could use the "Selective Browse" feature. While either Amplifier, Cabinet or Stack is in focus turn the BROWSE knob and select option "From Rigs". Now you can for example browse through all Amplifier Modules included in your Rig Pool while all other Modules of your current Rig stay "frozen".

In order to create new permanent combinations the copy and paste feature is very convenient.

While this Slot is loaded open the Rig Settings and press soft button "Store to Pool".

Yes, there are two seperate controls for the signal fed into Aux In and Mix into MAIN OUTPUTS and HEADPHONE Output/MONITOR OUTPUT. So you could feed the monitor mix from FOH into the Aux In (RETURN and ALTERNATIVE INPUT) and control the mix with the parameter "Aux In >Headph." in the Output Section.

This approach makes sense, if you are using PA-monitor(s) for your guitar signal on stage anyhow and want to leverage those for band monitoring. Make sure, that "Aux In >Main" rests at minimum level to avoid a feedback loop.

In Performance Mode there are different tags for Slot Name, Rig Name, and Performance Name, which help you to organize your sounds. 

The Rig Name gets displayed below the Performance Name. The Rig Name is automatically initialized, when you select a Rig from the Browse Pool into any Slot. However as Rigs in Performance Mode are stored seperately and are independent from their parent Rigs in Browse Pool, you could modify their settings incl. Rig Name. Like in Browse Mode Rig Names can be edited in the Rig Settings selecting "Rig Tags" and then "Edit". Again, such modifications don't affect the parent Rig in the Browse Pool.

Slot Name gets automatically initialized with the Rig Name, when you load the first Rig into any Slot. However you can edit the Slot Name in the "Edit"/"Slot Settings" menu to whatever string you prefer e. g. "Solo" in order to indicate the purpose of the Slot.

As long as both Slot Name and Rig Name stay identical, the Slot Name will be adapted each time you load another Rig with another Rig Name into that Slot. As soon as you change the Slot Name to something differing from the Rig Name e. g. "Intro" the Slot Name will stay unaffected, even if you load another Rig into this Slot.

Obviously the screen offers less space for Slot Name than for Rig Name, however you have got both to organize your sounds.

Performance Name can be edited while you store a Performance and can be modified in the "Edit"/Performance Tags" menu.

Yes, modelling amps or software can be profiled, although the results from profiling modeled amps can sometimes be underwhelming. The reason is that some emulations try to mimic the typical tube sound using techniques that don't necessarily match the analog reality.

Yes, absolutely!

You could profile your favorite bass amplifiers or just leverage our Factory Bass Amp Profiles, which are included in the Factory Content and can also be downloaded as Bass Rig Pack from our download page. While playing you can focus your View on those Bass Rigs by selecting "Just Bass". Current software does also include some specific features for bass players such as Parallel Path and Analog Octaver. Please refer to related information in the Reference Manual.


As a matter of fact, the Profiler comes with four Factory Profiles taken from one of the best-sounding solid state amps in history: the Roland JC-120*.

*Product name and company name are trademarks of Roland Corporation. Kemper GmbH is not associated or affiliated therewith. These names are solely used for purpose of identifying the specific products, which have been used during profiling.

Rig VOLUME (bottom row) is made for adjusting relative volume differences between Rigs for your performance. In general it should be placed on or around the middle position (unity volume). If you do that, you should rarely see a red OUTPUT LED.

We have put weeks of work into the Profiler for creating a constant volume situation. One aspect of this is that the volume is automatically fine-tuned during the profiling process. But this cannot be done 100% perfectly, because a perceived volume is not necessarily equal to a measured energy. The sound (here the frequency spectrum) of your guitar will also have an impact on the perceived volume. A Strat single coil will deliver totally different results than a humbucker on a 7-string guitar. This cannot be anticipated or calculated. Last but not least the most important: The output volume of your guitar. The levels of various guitars could differ by more than 20 dB. That's a lot! Clean sounds fully depend on the volume of your guitar (unless you use a compressor) while high gain sounds are mostly constant due to the compression aspect of the distortion. This is why it's mandatory to "tell" the Profiler about the volume of your guitar by adjusting the Clean Sens parameter in the Input Menu. Please read the respective chapter in the The Basics manual or view the Tutorial video. If you set the Clean Sens parameter correctly for your guitar, so that clean an distorted sounds have the same energy for your ears, you will have the perfect setting for your guitar: - only minor volume differences between different Rigs - no red LED on INPUT nor OUTPUT. The Profiler performs automatic leveling during the profiling process. This can later be modified by you with the target guitar, your ears and a simple tweak of a knob.

Any more questions? Call our experts!
+49 700 776 34 54 64
(0,136€/min. Additional costs may apply for calls from mobile phones or from abroad)

Your customer service:
Monday-Thursday 12.00-17.00 (CET)