Reference Manual
CHAPTER 21. LIVE AUDIO EFFECT REFERENCE 279
rest of Amp's parameters - in non-linear and sometimes unpredictable ways. For example,
increasing EQ levels can, in some cases, also increase the amount of distortion.
Presence is an additional tone control for mid/high frequencies in the power amp stage. Its
inuence on the sound varies considerably depending on the amp model used but can add
(or subtract) edge or crispness.
The Output switch toggles between mono and stereo (Dual) processing. Note that in Dual
mode, Amp uses twice as much CPU.
The Dry/Wet control adjusts the balance between the processed and dry signals.
21.1.1 Amp Tips
Because Amp is modeled on real-world analog devices, its behavior can sometimes be
difcult to predict. Here are some tips on getting the most out of Amp:
Amps and Cabinets
Guitar amps are designed to be used with accompanying speaker cabinets. For this reason,
Amp comes with a companion effect called Cabinet which is designed to be used after Amp
in a device chain. If you're looking for authenticity, we recommend this signal ow. But you
can also achieve interesting and exotic sounds by using Amp and Cabinet independently.
Electricity
The various circuits in guitar amps work with a continuous and xed amount of electricity.
For this reason, turning up a particular parameter may inadvertently decrease the amount
of available energy somewhere else in the amp. This is particularly noticeable in the EQ
controls. For example, turning up Treble can reduce the level of bass and midrange fre-
quencies. You may nd that you need to carefully adjust a number of seemingly unrelated
parameters to get the results you want.