Amp Ctl (Amp Control) 1/2; Master; Ns (Noise Suppressor) - Boss GT-PRO Owner's Manual

Chapter 4 Introduction to Effects and Parameters

AMP CTL (Amp Control) 1/2

By connecting your guitar amp's channel switching jack to
the GT-PRO's AMP CTL 1 (AMP CTL 2) jack, you can then
use [AMP CTL 1] ([AMP CTL 2]) to switch the amp channel.
There are two systems, AMP CTL 1 and AMP CTL 2, that
you can use.
This combining of the GT-PRO and the amp channels allows
you to get an even wider variety of distortion sounds.
Since the Amp Control setting is handled as one of the effects
parameters saved to each individual patch, it allows you to
switch guitar amp channels with each patch.
fig.04-0190
Guitar Amp
(amps channel switching jack)
Guitar Amp
(amps channel switching jack)
* To determine how the amp channels are switched when the
circuit is open and shorted, refer to the amp owner's manual,
or actually confirm the sounds by operating the amp.
With Amp Control, not only can you switch amp
channels, you can also use it to switch the external effect
device's effects on and off, like a foot switch controller.
54
Open
AMP CTL 1
AMP CTL 2
Lit
GT-PRO
(AMP CTL 1/2 jack)
Short
AMP CTL 1
AMP CTL 2
Off
GT-PRO
(AMP CTL 1/2 jack)

MASTER

The following parameters can be set with MASTER.

• NS (Noise Suppressor)

• Patch Level
• Output
• Master BPM
• FV (Foot Volume)
NS (Noise Suppressor)
This effect reduces the noise and hum picked up by guitar
pickups. Since it suppresses the noise in synchronization
with the envelope of the guitar sound (the way in which the
guitar sound decays over time), it has very little effect on the
guitar sound, and does not harm the natural character of the
sound.
* Please connect the noise suppressor in the signal path prior to
the reverberation type effect. This setup will prevent an
natural break of the reverberation type effect.
Parameter/
Explanation
Range
On/Off
Off, On Switches the noise suppressor effect on/off.
This parameter can be set with the PATCH/VALUE dial.
When NS is On, the [MASTER] indicator lights.
* Even if [MASTER] is pressed, you cannot switch the noise suppressor
on and off.
Threshold
Adjust this parameter as appropriate for the
0–100
volume of the noise.
If the noise level is high, a higher setting is appropriate. If the noise
level is low, a lower setting is appropriate. Adjust this value until the
decay of the guitar sound is as natural as possible.
* High settings for the threshold parameter may result in there being no
sound when you play with your guitar volume turned down.
Release
Adjusts the time from when the noise sup-
0–100 pressor begins to function until the noise
level reaches "0."
Detect
This controls the noise suppressor based on
Input, NS Input,
the volume level for the point specified in
FV Out
Detect.
Input
Input volume from input jack.
NS Input
Noise suppressor input volume.
FV Out
Volume after passing through Foot Volume.