User Manual

Table Of Contents
PROFILING an Amp 274
PROFILING an Amp
Now were getting to the fun stuff! PROFILING your own amp, custom digital simulation, or favorite stomp box, is
what sets the KEMPER PROFILER apart from every other digital amplifier out there. We have spent years getting
our PROFILING system to deliver the goods in terms of sound quality, playability, and ease of use - all wrapped in a
user-friendly interface. So, while theres a lot of science and technology behind the concept of PROFILING, you will
find that its quite easy to do; this guide can show you the basics and get you started right away.
General Considerations
To create a PROFILE
TM
, the original amplifier, which we will refer to as the “reference amp”, has to be connected to
the PROFILER using the DIRECT OUTPUT and the RETURN input on the back. PROFILER Stage users connect to
SEND 1 and RETURN 1. The PROFILER then sends various tones and signals into the reference amp - it will sound
like warbles and static at various pitches and intensities, in other words: not too musical! To get technical for a
moment: these dynamically changing sounds allow the PROFILER to learn about the nonlinear behavior of the tube
architecture, and the dimensions of the passive components in the original amp. The PROFILER then listens to how
the reference amp reproduces these sounds and analyzes the results. These characteristics are then recreated in
the virtual signal flow of the PROFILER. Even the characteristics of the guitar cabinet and microphones, including all
the frequency buildups and cancellations, are detected and become a part of the PROFILE.
If that sounds a bit complicated, don’t worry about it. The important thing to understand is that those weird sounds
are how the PROFILER determines the unique way that your reference amp changes the sound of your guitar,
dynamically, over time. This information is then used to create a digital PROFILE of your reference amp.
You can PROFILE solid-state amps, as well as software modeling amps, although the results from PROFILING
modeled amps can sometimes be underwhelming. The reason for this is that some emulations use techniques that
don’t necessarily match the analog reality.