Boss DD-8 User Manual
Reference Manual
Panel Descriptions
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DC IN jack
Accepts connection of an AC Adaptor (PSA series; sold separately).
By using an AC Adaptor, you can play without being concerned
about how much battery power you have left.
* If there are batteries in the unit while an AC adaptor is
being used, normal operation will continue should the
line voltage be interrupted (power blackout or power cord
disconnection).
* Use only the specied AC adaptor (PSA-series).
* If the AC adaptor is connected while power is on, the power
supply is drawn from the AC adaptor.
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CHECK indicator
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This is a combination indicator, which indicates whether
the eect is on or o, indicates the various functions, and
functions as the battery check indicator.
The indicator lights when an eect is ON.
* If this indicator goes dim or no longer lights while an eect
is ON, or when the functions are indicated, the battery is
near exhaustion and should be replaced immediately. For
instructions on changing the batteries, refer to “Changing
the Battery” (p. 21).
* The CHECK indicator shows whether the eect is on or o,
and indicates the dierent functions. It does not indicate
whether the power to the device is on or not.
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OUTPUT-A (MONO) jack,
OUTPUT-B jack
The output jacks are used to connect the unit to an amplier
or another eects unit.
* The unit’s functions dier according to how it is connected.
Refer to “Setting the Output Method” (p. 15).
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INPUT-A (MONO) jack,
INPUT-B jack
These jacks accept input signals (coming from a guitar, some
other musical instrument, or another eects unit).
* The unit’s functions dier according to how it is connected.
Refer to “Setting the Output Method” (p. 15).
* The INPUT-A (MONO) and INPUT-B jacks double as power
switches. Power to the unit is turned on when you plug into
the INPUT-A (MONO) or INPUT-B jack; the power is turned
o when the cable is unplugged. Be sure to disconnect any
cord plugged into the INPUT-A (MONO) or INPUT-B jack
when not using this eects device.
Panel Descriptions
5
TEMPO/EXP jack
This jack is for connecting a footswitch (FS-5U, FS-6, FS-7; sold
separately) or an expression pedal (Roland EV-5, FV-500H,
FV-500L, EV-30; sold separately).
This jack lets you use a footswitch to set the tempo, control
the loop, or turn TWIST on/o, or use an expression pedal to
control various parameters.
* For details, refer to “Setting the Tempo Using a Footswitch”
(p. 12),
“Using a footswitch to control the loop function” (p. 14),
“Using the TWIST Function” (p. 14), or
“Control Using an Expression Pedal” (p. 19).
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Pedal switch
This is used for switching the eect on and o, and for
switching between the dierent functions.
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Thumbscrew
When this screw is loosened, the pedal will open, allowing you
to change the battery.
* For instructions on changing the battery, refer to “Changing
the Battery” (p. 21).
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Panel Descriptions
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[E.LEVEL] knob
This adjusts the volume of the eect sound. Turn the knob
clockwise to increase the eect sound. When set at the three
o’clock position, the eect is played at the same volume as the
direct sound.
* When the [E.LEVEL] knob is set to MAX while in REVERSE
mode, only the eect sound is output, with the eect sound
at the same level as the input sound.
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[FEEDBACK] knob
This adjusts the feedback level. The number of times the delay
sound is repeated increases as the knob is turned to the right.
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11 10 9 8
* This cannot be used in LOOP mode.
* In GLT mode, this adjusts the depth of the GLT eect.
* Oscillation may occur when the knob is set at certain
positions.
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[TIME] knob
This adjusts the delay time. Turning the knob clockwise
lengthens the delay time.
* This cannot be used in LOOP mode.
* The delay times that can be set vary according to the
position of the [MODE] knob.
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[MODE] knob
This switches the delay eect.
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[CARRYOVER] switch
This selects whether the delay sound remains (ON) or does not
remain (OFF) when you turn o the eect.
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Panel Descriptions
Characteristics of each mode
MODE knob Explanation Delay time
STANDARD Clear digital delay. 20–800 ms
ANALOG Mild analog delay. 20–800 ms
TAPE Sound with the modulation that is distinctive of a tape echo unit. 20–800 ms
WARM Mild digital delay. 20–800 ms
REVERSE Delay played backward. 300–5000 ms
+RV Delay with reverb. 20–800 ms
SHIM Delay with pitch-shifted sound added. 200–800 ms
MOD Digital delay with modulation. 20–800 ms
WARP Creates a dreamlike sound. 20–800 ms
GLT Creates a machine-gun-like sound. 10–400 ms
LOOP
*1: In LOOP mode, the maximum recording time is 20 seconds for stereo input or 40 seconds for mono input.
* If you specify the long delay output setting, the delay time is doubled. For details, refer to “Setting the Output Method” (p. 15).
Records your performance, and repeatedly plays it back.
For more information, refer to “Using the LOOP (Overdubbing) Function” (p. 13).
sec. *1
40
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Connections
AC Adaptor
(PSA series; sold
separately)
Keyboard
Electric Guitar
Guitar Amplier
You can obtain a variety of dierent delay eects by changing how the connections are made.
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For more information, refer to “Setting the Output Method” (p. 15).
Footswitch
(FS-6 etc.)
Expression Pedal
(Roland EV-5 etc.)
Footswitch connections
Refer to the diagrams for details on the appropriate cables to use and the setting of the polarity switch.
* When connecting a footswitch, you must turn o the power before connecting or disconnecting cables. Failure to observe this
precaution will cause malfunctions.
Connect to TEMPO/EXP jack Connect to TEMPO/EXP jack Connect to TEMPO/EXP jack Connect to TEMPO/EXP jack
Connecting one FS-5U unit
1/4” phone type
1/4” phone type
,
Connecting two FS-5U units
Stereo 1/4” phone type
1/4” phone type × 2
RING TIP
,
Connecting one FS-6 unit
Stereo 1/4” phone type
Stereo 1/4” phone type
,
A&B
Connecting one FS-7 unit
Stereo 1/4” phone type
Stereo 1/4” phone type
A&B
,
Connections
FS-5U POLARITY switch
FS-6 MODE/POLARITY switch FS-7 MODE/POLARITY switch
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