26
Chapter 4 Introduction to Effects and Parameters
In this chapter you will find detailed descriptions for each of
the GT-8’s onboard effects, and the parameters used to
control them.
The sound being input to each effect is called the “
direct
sound
,” and the sound modified by the effect is called
the “
effect sound
.”
PREAMP/SPEAKER (Preamp/
Speaker Simulator)
COSM technology plays an indispensable role in simulating
the distinguishing characteristics of various guitar amps in the
“Preamp” section, and is also used to simulate various speaker
sizes and cabinet constructions in the “Speaker Simulator.”
The trademarks listed in this document are trademarks
of their respective owners, which are separate companies
from BOSS. Those companies are not affiliated with
BOSS and have not licensed or authorized BOSS’s GT-8.
Their marks are used solely to identify the equipment
whose sound is simulated by BOSS’s GT-8.
Parameter/
Range
Explanation
On/Off
Off, On
Turns the PREAMP/SPEAKER effect on/
off.
Channel Mode
Single, Dual Mono,
Dual L/R, Dynamic
Selects how the two channels are to be used.
Single
Only the channel selected with Channel Select is used.
fig.04-010
Dual Mono
The output of Channels A and B is mixed.
fig.04-020
Dual L/R
Channel A is output from the left and Channel B is output from the
right.
fig.04-030
Dynamic
Channels A and B are switched according to the guitar input volume
level. This produces dynamic tonal changes in response to the pick-
ing dynamics.
* For more detailed information, refer to “Controlling Various
Parameters Through the Guitar Volume” (p. 67).
fig.04-040
Channel Select
A, B
Selects the preamp channel whose settings
are to be changed.
Channel Delay Time
0–50ms
The output from Channel B is slightly de-
layed.
Adjusting this increases the sense of depth and breadth in the sound.
* This parameter is enabled when Channel mode is set to Dual Mono or
Dual L/R.
Dynamic Sens
0–100
Effective with Dynamic selected for Chan-
nel Mode. Adjusting the sensitivity in re-
sponse to the input level changes the timing
of the channel switches.
A
B
A
B
A
B
L
R
A
B
Input Level
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