VOX DA20, DA10 Owner's Manual

1E

IMPORTANT SAFETY INSTRUCTIONS

• Read these instructions.

•Keep these instructions.

• Heed all warnings.

•Follow all instructions.

• Do not use this apparatus near water.

• Mains powered apparatus shall not be exposed to dripping or splashing
and that no objects filled with liquids, such as vases, shall be placed on
the apparatus.

• Clean only with dry cloth.

• Do not block any ventilation openings . Install in accordance with the
manufacturer's instructions.

• Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.

• Do not defeat the safety purpose of the polarized or grounding-type plug.
A polarized plug has two blades with one wider than the other . A
grounding type plug has two blades and a third grounding prong. The
wide blade or the third prong are provided for y our safety. If the provided
plug does not fit into your outlet, consult an electrician for replacement of
the obsolete outlet. (for USA and Canada)

• Protect the power cord from being walked on or pinched particularly at
plugs, convenience receptacles, and the point where the y exit from the
apparatus.

• Only use attachments/accessories specified by the manufacturer.

• Unplug this apparatus during lightning storms or when unused for long
periods of time.

•Turning off the power switch does not completely isolate this product from
the power line so remove the plug from the socket if not using it for
extended periods of time.

• Install this product near the wall socket and keep the po w er plug easily
accessible.

•WARNING—This apparatus shall be connected to a mains socket outlet
with a protective earthing connection.

• Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as power­supply cord or plug is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.

2

• Do not install this equipment on the far position from wall outlet and/or
convenience receptacle.

• Do not install this equipment in a confined space such as a box for the
conveyance or similar unit.

• Excessive sound pressure from earphones and headphones can cause
hearing loss.

• Battery shall not be exposed to excessive heat such as sunshine, fire or
the like.

•

Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.

The lightning flash with arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of
uninsulated “dangerous voltage” within the product's enclosure
that may be of sufficient magnitude to constitute a risk of electric
shock to persons.

The exclamation point within an equilateral triangle is intended
to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature
accompanying the product.

THE FCC REGULATION WARNING (for USA)

This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates , uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However , there is no guar antee that interf erence will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or
more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver .

• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help .

Unauthorized changes or modification to this system can void the user’s
authority to operate this equipment.

Notice regarding disposal (for EU)

If this “crossed-out wheeled bin” symbol is sho wn on the product
or in the operating manual, you must dispose of the product in an
appropriate way. Do not dispose of this product along with your
household trash. By disposing of this product correctly, you can
avoid environmental harm or health risk. The correct method of
disposal will depend on your locality , so please contact the
appropriate local authorities for details.

Contents

Introduction ............................................. 4

Welcome aboard! ..........................................................4

Main features ................................................................. 4

Setup ....................................................... 5

Installing Batteries...........................................................5

The Guitarist’s Guided Panel Tour.............. 7

A. Top Panel ..................................................................7

B. Rear Panel ................................................................. 9

Creating Your Own Program and Adjusting

the Noise Reduction................................ 10

Creating your own program.......................................... 10

Adjusting the noise reduction.........................................11

Styles and effects ................................... 12

STYLES ........................................................................ 12

Effects..........................................................................14

Troubleshooting...................................... 17

Specifications ......................................... 18

* Company names, product names, and names of formats etc. are the
trademarks or registered trademarks of their respective owners.

Programmer’s Cheat Sheet...................... 19

3

Introduction

Welcome aboard!

Thanks for choosing the VOX DA10/DA20. To ensure a long
and trouble-free relationship with your new amp, please
read this manual carefully, use the amp as directed and
keep the manual for future reference.

Main features

• The compact DA10/DA20 features ten or twenty
watts (10W/20W) producing stellar tones inherited
from the VOX Valvetronix series (AD15VT, AD30VT,
AD50VT, AD100VT).

• The amplifier can be powered by six C alkaline bat­teries. This portability feature enables you to play
anywhere. When powered by batteries, the amplifier
outputs a maximum of 5 watts, and features up to 25
hours of play time (at the output wattage of 0.5W).

• Inputs include an AUX IN jack, for connecting an ex­ternal audio device (CD, MP3 player, etc.), and a
MIC INPUT jack, to which you can connect a micro­phone. You can play along with recorded music or
accompany your vocals on guitar.

• The TAP button enables you to easily set the flanger
speed or delay time in sync with the tempo.

• The amplifier provides eleven distinctive sound
styles that can be used in various musical genres.

4

• Eleven high-quality effects are built in and seven are
multi effects that let you use two effects simulta­neously plus Noise Reduction.

• The power select switch lets you adjust the output
wattage of the power amp. This means that even
when the master volume is turned up to the max to
drive the power amp, you can lower the volume with­out losing any tone or feel.

Setup

Please refer to the illustrations in the section entitled “The
Guitarist’s Guided Panel Tour” (page 7).

1. Turn the MASTER volume on the amp all the way
down.

2. Insert the batteries as shown on page 5.
Alternatively, plug the supplied power cord into the
power input on the rear panel, then plug the power
cord into a wall outlet.

NOTE:Never use any Power cord other than the included one.

3. Plug your guitar into the INPUT jack on the top panel.
If you also plan to use a CD or MP3 player, or a mi­crophone, connect the player to the AUX IN jack or
the microphone to the MIC INPUT jack on the rear
panel.

4. Turn on the STANDBY switch.

5. Slowly raise the MASTER volume to a desired level.

HINT: The rear panel POWER SELECT switch controls the

output level of the power amp, letting you adjust the
volume while keeping that great-sounding power-amp
distortion!

HINT: Selecting a lower output wattage during battery opera-

tion will extend battery life.

Installing Batteries

Remove the battery compartment cover located on the bot­tom of the unit by pulling the ribbon. Insert six C alkaline
batteries as shown in the figure. Be sure to observe the cor­rect polarity.

NOTE:Batteries are not included. You will need to purchase

them separately. Never use any type of battery other
than alkaline batteries.

About battery life

The battery life varies depending on the output watt­age selected by the POWER SELECT switch.

POWER SELECT Battery life

MAX 8 hours

1.5W 18 hours

0.5W 25 hours

NOTE:If batteries are used, the maximum output wattage of

the amplifier (i.e., with the POWER SELECT switch
set to MAX) is about 5W.

5

Replacing the batteries

Replace the batteries when the indicator above the
STANDBY switch becomes dim.

NOTE:If the battery power is low, noise may be heard.
NOTE:Depleted batteries must be removed from the DA10/

DA20 immediately. If you leave them in, malfunctions
such as battery leakage may occur. You should also re­move the batteries if you will not be using the DA10/
DA20 for an extended time.

6

The Guitarist’ s Guided Panel Tour

In this chapter we’re going to take a look at the top and rear
panels of your amp.

GAIN

This adjusts the preamp gain.

TONE

This adjusts the tone.

A. Top Panel

12 34

1. INPUT Section

This is where you plug in your guitar.

2. AMP Section

Here’s where you adjust the settings for your ampli­fier.

STYLE selector switch

This switch selects one of the eleven different sound
Styles including clean sounds, slightly-distorted
bluesy sounds, crunchy rhythm sounds, and high­gain lead sounds. When you select a different type of
sound, the noise reduction setting is automatically
configured to accommodate the selected amp sound
Style.

MASTER

This adjusts the overall volume of the amplifier.

NOTE:The GAIN control also affects the amount of distortion.

For some settings, there may be virtually no distortion.

3. Effect section

Here you can adjust settings for the effects and noise
reduction. For details on each effect, refer to “Styles
and effects” (page 12).

EFFECTS

Selects the type of effect. You can use the TAP but­ton, EDIT 1 knob and Bypass button to adjust the pa­rameters of each effect. When you select an effect
type, the effect parameters will be initialized and
Effect Bypass will be defeated.

EDIT 1

Use this to adjust the parameters of each effect. By
using this knob in conjunction with the TAP and BY­PASS buttons as described below, you can adjust
three different parameters. (That is, if the BYPASS
LED is dark.)

Tu rn EDIT 1 (without pressing a button) (EDIT 1)
Tu rn EDIT 1 while pressing TAP (EDIT 2)

7

Tu rn EDIT 1 while pressing BYPASS (EDIT 3)
If the BYPASS LED is lit (the effect is bypassed), you
can hold down the TAP button and turn the EDIT 1
knob simultaneously to adjust the noise reduction
sensitivity.

NOTE:You can’t adjust the effect parameters while the BYPASS

LED is lit.

NOTE:When you turn on the DA10/DA20, the EDIT 2, EDIT

3 and Noise Reduction parameters will be automatically

set to the values appropriate to the current selection of

the EFFECTS and STYLE selector switches.

TAP (EDIT 2) and LED

This button enables you to set the speed of a modu­lation-type effect such as CHORUS or FLANGER the
DELAY time or REVERB length. Simply press the
TAP button twice at the desired interval and the LED
blinks at the specified speed or time.

HINT: To set the time to exactly match the tempo of a song,

press the T AP button several times along with the song.

HINT: You can also further adjust the speed or time, by holding

down the TAP button and turning the EDIT 1 knob.

(This is the EDIT 2 mode)

NOTE:If the BYPASS LED is lit, you won’t be able to use the

TAP switch to set the time. (The T AP LED will be dark.)

NOTE:If you turn off the power to the unit, the value set by the

TAP button will be reset to its initial value.

BYPASS (EDIT 3) and LED

If you don’t want to use an effect, press this button to
turn the effect off (i.e., bypassed). If the effect is by­passed, this LED will be lit.

NOTE:You can’t adjust the effect parameters if the BYPASS

LED is lit.

HINT: While the effect is bypassed, you can adjust the noise

reduction sensitivity by holding down the TAP button
and turning the EDIT 1 knob.

HINT: The bypass setting is remembered even when you switch

modes, switch programs, or turn off the power.

HINT: The Bypass button can be used to modify effect param-

eters (EDIT 3). Press and hold Bypass and simulta­neously turn the EDIT 1 knob. See the chart on page 14
for what parameters can be controlled.

4. STANDBY switch

When the power is on, the indicator located above
the switch will be lit.

8

B. Rear Panel

Vox Amplification Ltd.

USE ONLY WITH FUSE

BUILT BY VOX MANUFACTURING

VIETNAM UNDER THE DIRECTION
OF VOX R&D ENGLAND.

1 2 34 56

1. Power input

Connect the included power cord here.

2. POWER SELECT

This switch adjusts the output wattage of the power
amp. This means that even when the master volume
is turned up to max to drive the power amp, you can
adjust the volume without losing any tone or feel.

3. LINE/PHONE jack

Use this jack if you’re plugging directly in to a mixer,
recording device, or if you’re using headphones.The
output signal from this jack is taken before the power
amp, and the character of the guitar amp cabinet is
applied to it.

NOTE:Connecting headphones to this jack will mute the inter-

nal speaker.

3021177

CONFORMS TO
UL STD 60065

CERTIFIED TO
CAN/CSA STD
C22.2 No. 60065

POWER
SELECT

1.5W 0.5WMAX

WARNING:

TO REDUC E THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.

CAUTION:

DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ON LY WITH SAME TYPE AND R ATING O F FUSE.

LINE/PHONE AUX IN INPUT VOLUME

ATTENTION:

DEBRANCHER AVANT DE REMPLACER LE FUSIBLE.
UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE.

MIC

4. AUX IN jack

Connect an external audio device to this jack. This
enables you to conveniently connect a CD or MP3
player and play your guitar along with the player’s
output.

NOTE:Adjust the playback volume on the connected player.

5. MIC INPUT jack

Connect a microphone to this jack.

6. MIC VOLUME knob

This adjusts the volume of the microphone input.

9

Creating Y our Own Program and Adjusting the Noise Reduction

This section explains how to create your own program, in­cluding how to adjust effect parameters and the noise re­duction setting.
As you’ll hear, selecting a different effect type by using the
EFFECTS selector switch will automatically adjust the EDIT
2 and EDIT 3 parameter values to suit the selected effect
type.
In addition, selecting a different amp sound style by using
the STYLE selector switch will automatically set the noise
reduction to a value that suits the selected amp type. This
can be very convenient. However, you may sometimes want
to tweak an existing preset program to change a sound to
exactly what you have in mind. Alternatively, you may want
to adventurously explore the world of sound creation and
design by starting from scratch.

HINT: When you turn on the DA10/DA20, the EDIT 2, EDIT

3 and Noise Reduction parameters will be automati-

cally set to the values appropriate to the current selec-

tion of the EFFECTS and STYLE selector switches.

Creating your own program

Let’s start from scratch.

1. Use the BYPASS button to bypass the effect. (The
BYPASS LED is lit.) If you want to use an effect, you
can add it at the end of this process.

2. Use the STYLE selector switch to select an amp
sound type.

HINT: For more details on STYLE options, refer to “Styles and

Effects” (page 12).

3. Adjust the top panel GAIN and TONE knobs.

4. Hold down the TAP button and turn the EDIT 1 knob
to adjust the noise reduction. This setting is also
saved as part of your program. For details, refer to
“Adjusting the noise reduction” (page 11)

HINT: Adjust the noise reduction so that you don’t hear noise

when you’re not playing your guitar.

5. If you want to use an effect, press the BYPASS but­ton to turn bypass off (the BYPASS LED goes dark).

6. Select an effect, and make adjustments. For ex­ample if you want to add delay, turn the EFFECT
selector to “DELAY.” If the selector is already set to
“DELAY,” you’ll have to turn it to a different effect and
then back to “DELAY.”
Use the TAP button or EDIT 1 knob to adjust the
delay time and delay level.

10

DELAY TIME: Press the TAP button twice at the de-

sired interval, or hold down the TAP
button and turn EDIT 1.

DELAY LEVEL: Turn EDIT 1 (without pressing any

button).

DELAY FEEDBACK: T urn EDIT 1 while holding down the

BYPASS button.

HINT: For details on the effects, refer to “Styles and effects”

(page 12).

Adjusting the noise reduction

Here’s how to adjust the noise reduction

HINT: When you use a high-gain amp type such as “HIGAIN

1,” “HIGAIN 2” or “HIGAIN 3,” we recommend that
you use noise reduction.

1. Press the BYPASS button to make the BYPASS LED
light.

2. Hold down the TAP button and turn the EDIT 1 knob
to adjust the noise reduction sensitivity. Turning the
knob toward the right will produce greater noise re­duction (less noise). If you turn the knob all the way
to the left, noise reduction will be off (more noise).

NOTE:Depending on the guitar you’re using, excessively high

noise reduction settings may cause notes to be cut off in
an unwanted manner!

NOTE:When you select a different type of sound, the noise r e-

duction setting is automatically configured to its initial
value to accommodate the selected amp sound Style.

3. If you want to use effects, press the BYPASS button
to make the BYPASS LED go dark and the effect(s)
will be heard.

11

Styles and effects

In this section we’re going to talk about the eleven styles and
effects.

STYLES

You know that there is a plethora of great sounding amps out
there, and that the quest for the ultimate sound can be end­less. After countless hours of soul searching, earnest dis­cussions (not to mention the occasional friendly argument!),
calls to tone-wise friends (some professional players, some
not ... but all blessed with great ears)—plus, of course, lis­tening and playing—a top eleven list was finally drawn up. As
you’re about to discover, the ones we went with are not only
the cream of the crop but also offer up the widest possible
array of the greatest guitar tones known to humans—from
pristine clean to outrageous overdrive and all points in-be­tween.

CLEAN 1

This style has a beautifully responsive, rounded low­end, delightfully transient mid-range attack and
sweet treble making it the perfect partner for single­coil pickups. Strummed chords just ring out and blos­som.

CLEAN 2

This style’s clean sound is very tight “n” twangy, with
a deep, taut, piano-like bass.

BLUES 1

This style is very responsive to picking dynamics and
guitar volume settings. Backing-off your guitar vol­ume can produce a beautifully clean and full tone. It
also means that you can make notes or chords more
distorted or clean depending on how hard or soft you
pick.

BLUES 2

This style has a thick tone with second and third or­der harmonics that increase as the amp is cranked.

BLUES 3

This instantly recognisable signature tone produces
clean sounds that are rich and jangly with a smooth
yet detailed top end, and overdrives that have a glo­rious, throaty bark.

12

CRUNCH 1

This organic sounding style is dynamically rich and
warm, yet biting and distinct!
Rolling back your guitar’s volume results in a unique
and highly usable clean sound.

CRUNCH 2

This style has a fat, roaring sound with a distinctive,
cranium-crushing crunch.
Rolling back your guitar’s volume produces a bright,
clean sound that’s perfect for chord work and will cut
through any mix.

HIGAIN 1

This style’s toneful, high gain punch and girth results
in a highly aggressive, tone-breathing monster ca­pable of mondo-gain while retaining individual note
definition.

HIGAIN 2

The deep, loose low-end, some-what “fizzy” top and
monstrous gain will make this style a mainstay for
modern, players who tune low.
At low GAIN settings, this produces a distinctive,
bright clean sound bolstered by rich, upper harmon­ics that add fullness and dimension.

HIGAIN 3

This is capable of a powerful, heavily saturated
sound that combines an open low-end with com­pressed mids and highs.
The result is a tone that remains focused and well
defined at even the most extreme gain settings.

DRIVE

This style has a spectacular overdriven sound that’s
perfect for sax-like, legato soloing. With its GAIN
control wide-open, it produces a stunning sustain
which is very smooth and soulful.

13

Effects

The DA10/DA20 provides eleven of the most popular effects
(some effects actually combine two effects). You can adjust
the SPEED parameter of modulation effects or the TIME pa­rameter of delay/reverb effects simply by pressing the TAP
switch twice. In addition to using the EDIT 1 knob to adjust
the most important parameters, you can make more de­tailed adjustments by holding down the TAP button or BY­PASS button while turning the EDIT 1 knob.

TYPE TAP EDIT 1 EDIT 2 [TAP+EDIT 1] EDIT 3 [BYPASS+EDIT 1]
AUTO WAH --- WAH SENS WAH ATTACK WAH POLARITY
COMP --- COMP SENS COMP ATTACK --­COMP+PHASER PHASER SPEED COMP SENS PHASER SPEED PHASER RESONANCE
COMP+CHORUS CHORUS SPEED COMP SENS CHORUS SPEED CHORUS MIX
CHORUS+DELAY DELAY TIME DELAY LEVEL DELAY TIME CHORUS MIX
CHORUS+REVERB CHORUS SPEED REVERB LEVEL CHORUS SPEED CHORUS MIX
FLANGER+REVERB FLANGER SPEED REVERB LEVEL FLANGER SPEED FLANGER RESONANCE
TREMOLO+REVERB TREMOLO SPEED REVERB LEVEL TREMOLO SPEED TREMOLO DEPTH
ROTARY+REVERB ROTARY SPEED REVERB LEVEL ROTARY SPEED ROTARY SENS
DELAY DELAY TIME DELAY LEVEL DELAY TIME DELAY FEEDBACK
REVERB REVERB TIME REVERB LEVEL REVERB TIME REVERB HIDAMP

NOTE: In order to adjust the effect parameters, Effect Bypass

must be off (BYPASS LED dark). If you hold down the
TAP switch and turn the EDIT 1 knob when bypass is
on (BYPASS LED lit), you’ll be adjusting the noise re­duction - not the effect parameter .

14

AUTO WAH

This models an auto-wah; a device that creates an
automatic “wah” effect that varies with your picking
dynamics (i.e., how hard or soft you hit the strings).

EDIT 1 “SENS” Adjusts the sensitivity of the ef fect

in response to the volume of your
guitar.

EDIT 2 “ATTACK” Adjusts the response speed of the

auto wah.

EDIT 3 “POLARITY” Adjusts the direction in which the

effect operates.

COMP

Want to play a clean passage that needs to be nice,
smooth, and even? Need a bit more sustain on a
lead line? Then look no further; COMP is the effect
for you. It’s modeled on a compressor pedal that is
hugely popular due to the percussive clean sound it
can produce—making it perfect for ’80s and ’90s pop
and funk rhythm work. It can also add a singing,
mellow, sustain to lead lines - clean or dirty.

EDIT 1 “SENS” Adjusts the sensitivity of the com-

pressor . T urning the knob toward the
right will increase the amount of
compression and sustain. If you turn
the knob all the way to the left, the
effect is OFF.

EDIT 2 “ATTACK” Adjusts the strength of the attack.

HINT: In the COMP+PHASER and COMP+CHORUS com-

bination effects, the ATTACK parameter is already set
to the optimal value.

PHASER

A model of a much respected and popular analogue
phaser, housed in a banana yellow box!

TAP“SPEED” Sets the modulation speed in a

range of 0.1...10 [Hz].

EDIT 2 “SPEED” This lets you use the knob to make

fine adjustments to the parameter.

EDIT 3 “RESONANCE” Adjusts the amount of resonance.

CHORUS

This models the rich sound of an analog chorus unit.

TAP“SPEED” Sets the modulation speed in a

range of 0.1...10 [Hz].

EDIT 2 “SPEED” This lets you use the knob to make

fine adjustments to the parameter.

EDIT 3 “MIX” Adjusts the mix amount of the ef-

fect.

HINT: In the CHORUS+DELAY combination effect, the

SPEED parameter is already set to the optimal value.

FLANGER

A model of a truly classic flanger that “unchained” a
highly influential modern guitarist who many hail as
the “godfather of two-handed tapping.”

TAP“SPEED” Sets the modulation speed in a

range of 0.1...10 [Hz].

EDIT 2 “SPEED” This lets you use the knob to make

fine adjustments to the parameter.

EDIT 3 “RESONANCE” Adjusts the amount of resonance.

15

TREMOLO

This effect is based on the highly acclaimed tremolo
circuit found in some guitar amps.

TAP “SPEED” Sets the tremolo speed in a range

of 2.5...10 [Hz].

EDIT 2 “SPEED” This lets you use the knob to make

fine adjustments to the parameter.

EDIT 3 “DEPTH” Adjusts the tremolo depth.

ROTARY

This models a rotary speaker.

TAP “SPEED” Sets the rotational speed of the

speaker in a range of 0.8...10 [Hz].

EDIT 2 “SPEED” This lets you use the knob to make

fine adjustments to the parameter.

EDIT 3 “SENS” By adjusting this parameter you can

make the rotational speed change
automatically in response to the vol­ume of your guitar. If you use this
function, set the SPEED to a slow
setting.

DELAY

This is a model of one of the most respected ana­logue tape echo machines ever made. In the original
the “echo” is produced by a playback head and the
exact “delay time” is set by varying the motor speed.
Many professionals prefer these “lo-fi” units because
of the warm, dark echoes they produce.

TAP “TIME” Sets the delay time in a range of

1...1,486 [ms].

EDIT 1 “MIX” Adjust the mix amount of the de-

layed sound.

EDIT 2 “TIME” This lets you use the knob to make

fine adjustments to the parameter.

EDIT 3 “FEEDBACK” Adjusts the amount of feedback.

HINT: In the CHORUS+DELAY combination effect, the

FEEDBACK parameter is already set to the optimal
value.

WARNING! If you crank up the FEEDBACK too much, an

uncontrollable, cascading “runaway” of echoes will oc­cur . So, use your ears when setting this!

REVERB

A model of the most popular spring reverb system
used in guitar amps.

TAP “TIME” Sets the reverb time in a range of

0.8...8 [seconds].

EDIT 1 “MIX” Adjusts the mix amount of the re-

verb.

EDIT 2 “TIME” This lets you use the knob to adjust

the reverb time.

EDIT 3 “HI DAMP” Adjusts the dampening of the high-

frequency range.

HINT: In combination effects, the TIME and HI DAMP pa-

rameters are already set to optimal values.

16

Troubleshooting

1. The amp isn’t powering up when the STANDBY
switch is ON.

•Have you installed batteries? Is the polarity correct?
Or, is the power cord connected to the rear panel of
the amp correctly?

• Is the power cord plugged into an AC outlet?

• Is the AC outlet switched on and working?

• Is the power cord damaged?

2. There’s no sound coming from the amp

• Is your guitar turned up?

• Are both ends of your guitar cable plugged into
where they should be?

• Is your guitar cable working?

• Are the top panel MASTER volume and GAIN knob
turned up?

• Do you have headphones or anything else plugged
into the amp’s rear panel LINE/PHONE jack? If “yes,”
unplug!

3. The amp doesn’t seem very loud

• Is your guitar turned up?

• Is the top panel MASTER volume or GAIN knob
turned down low?

• Is the POWER SELECT switch on the rear panel set
to a lower wattage?
Are you using batteries? If batteries are used, the

•
maximum output wattage of the amplifier is about 5W.

• The batteries may be worn out.

4. There’s no sound heard from the LINE/PHONE
jack when you use it.

• Check that the top panel MASTER volume isn’t
turned all the way down.

• Make sure sound is coming from the amp.

IMPORTANT NOTE: You’ll need to unplug your head

or cable from the LINE/PHONE jack to do this, since plug­ging something into this jack automatically mutes the
amp’s speakers. If there’s still no sound from the amp, go
to “There’s no sound coming from the amp.” If you do
hear sound, check the headphones or cable you are hook­ing up to this jack.

phones

5. You can’t hear any effects.

• Check that the BYPASS LED isn’t lit. If it is lit, the ef­fect is bypassed. Press the BYPASS button to disen­gage it; the BYPASS LED will go off.

• Is the EDIT 1 knob turned down too low? Adjust the
EDIT 1 knob.

6. You cannot hear the sound from a player con­nected to the rear panel AUX IN jack.

• Is the player connected to the amp correctly?

• Is the volume level on the player set too low?

7. Y ou cannot hear sound from a microphone con­nected to the MIC INPUT jack.

• Is the microphone connected to the amp correctly?
Is the mic switch turned on?

• Is the MIC VOLUME knob set too low?

17

Specifications

Number of amp types: 11
Number of effects: 11
Noise reduction: 1
Input/output jacks:

Top panel: 1x INPUT

Rear panel: 1x AUX IN jack, 1x MIC

INPUT jack, 1x LINE/
PHONE jack

Power amp output:

DA10: Maximum 10W RMS @ 8

ohms

DA20: Maximum 20W RMS @ 8

ohms

Speaker:

DA10: 2x VOX original (6.5inch 8

ohm)

DA20: 2x VOX original (8inch 8

ohm)

Signal processing:

A/D conversion: 24-bit
D/A conversion: 24-bit
Sampling frequency: 44.1 kHz
Power supply: Six C batteries or local AC

voltage

Power consumption:

DA10: 16W
DA20: 28 W

Dimensions (W x D x H):

DA10: 388 x 185 x 315 (mm)

15.28" x 7.28" x 12.40"

DA20: 463 x 230 x 378 (mm)

18.23" x 9.05" x 14.88"

Weight:

DA10: 7.5 kg/16.53 lbs.
DA20: 10.2 kg/22.49 lbs.

Included items: Power cord

* Appearance and specifications of this product are

subject to change without notice.

For more information on Vox products, please visit our
website at www.voxamps.co.uk

18

Programmer’s Cheat Sheet

Wanna remember how you set up your favorite programs?
Well, this is the place to do it!
Simply copy the sheet below and mark up by drawing lines
or coloring. Don’t forget to make notes on NR!

PROGRAM NAME:

EDIT 3 (BYPASS + EDIT):

NOTE:

NR (

NOISE REDUCTION

):EDIT 2 (TAP + EDIT)/TAP:

19

 2007 VOX AMPLIFICATION LTD.

1E

1

E

IMPORTANT NOTICE TO CONSUMERS

This product has been manufactured according to strict specifications and voltage require­ments that are applicable in the country in which it is intended that this product should be
used. If you have purchased this product via the internet, through mail order, and/or via a
telephone sale, you must verify that this product is intended to be used in the country in which
you reside.
WARNING: Use of this product in any country other than that for which it is
intended could be dangerous and could invalidate the manufacturer’s or
distributor’s warranty.
Please also retain your receipt as proof of purchase otherwise your product may
be disqualified from the manufacturer’s or distributor’s warranty.