12
Preparations for Using the GR-55
7.  Use the cursor [ ] [ ] buttons to move the cursor to the 
STRING SENS eld for the lowest string.
Play the lowest string as strongly as you ever expect to play it in actual 
performance, and use the dial to adjust the sensitivity as high as 
possible without allowing the meter to reach the full-scale position.
*  If the level meter reaches the full-scale position, the level is exces-
sive. Lower the sensitivity.
*  Depending on the bass you’re using, the level meter might reach 
full-scale even if the sensitivity is at minimum. If this is the case, 
adjust the distance between the divided pickup and the string so it’s 
somewhat greater than the recommendation.
8.  In the same way, adjust the sensitivity of the remaining 
strings as well.
9.  Check the volume balance of the strings.
Play each of the strings at normal strength; if a string sound unusually 
loud, lower the sensitivity of that string to minimize any discrepancy in 
volume between the strings.
10.  Press the [EXIT] button a number of times to return to the 
top screen.
These settings are required when you’ve newly installed a divided 
pickup on your bass, or when you’ve adjusted the height of the 
divided pickup. These settings will be retained even while the power 
is switched o. Once you’ve made them correctly, there’s no need 
to make them again each time you perform. For details on the other 
parameters, refer to “GK SETTING” (p.74).
Specifying the Output System 
(OUTPUT SELECT)
Here’s how to specify the device (amp) that’s 
connected to the OUTPUT jacks. The tone will 
be adjusted within the GR-55 to ensure that 
the optimal sound is produced on the device 
you specied.
1.  Press the [EDIT] button to access the 
EDIT screen.
2.  Use the PAGE [
] [ ] buttons to select the SYSTEM tab.
3.  Use the cursor [ ] [ ] buttons to select the OUTPUT SELECT 
icon, and press the [ENTER] button.
The OUTPUT SELECT screen will appear.
4.  Use the dial to select the type of device (amp) that’s 
connected to the OUTPUT jacks.
*  With the factory settings, this is set to “LINE/PHONES.”
*  If headphones are connected, this will automatically be “LINE/
PHONES” regardless of the OUTPUT SELECT setting.
Setting Description
LINE/PHONES
This is the appropriate setting when using headphones, 
or for when the GR-55 is connected to a keyboard amp, 
mixer, or digital recorder.
JC-120
Choose this setting if the GR-55 is connected to the guitar 
input of a Roland JC-120 guitar amp.
SMALL
Choose this setting if the GR-55 is connected to a small 
guitar amp.
COMBO
Choose this setting if the GR-55 is connected to the 
guitar input of a combo-type guitar amp (i.e., an amp that 
contains the amp and speaker in a single unit) other than 
the JC-120. Depending on the guitar amp you’re using, 
using the “JC-120” setting might produce better results.
STACK
Choose this setting if the GR-55 is connected to the guitar 
input of a stack-type guitar amp (i.e., an amp in which the 
amp and speaker are separate units).
JC-120 RETURN
Choose this setting if the GR-55 is connected to the 
JC-120’s RETURN jack.
COMBO 
RETURN
Choose this setting if the GR-55 is connected to the 
RETURN jack of a combo-type guitar amp.
STACK RETURN
Choose this setting if the GR-55 is connected to the 
RETURN jack of a stack-type guitar amp. You should also 
choose the “STACK RETURN” setting when using the GR-55 
with a guitar power amp and a speaker cabinet.