Qtone DA-1001 User manual

DA-1001
20W Digital Amplifier
User Manual

User Guide - DA-1001
3
Thank you for you pur hase of the qtone DA-1001 20W Digital Amplifier. The unit has 4 inputs as
well as 2 outputs and up to 20 watts of amplifi ation. As a digital amplifier it is very effi ient (up to
93%!) While no audio is provided the amplifier uses very little power and while in use, due to its
effi ien y, requires no heat-sink.
The outputs an be used to onne t other devi es to further use the sele ted inputs sound. The
“Audio Out” if from the sele tor before any tonal adjustment, meaning that it an be used to
onne t to another amplifier or a re ording devi e and without adjusting the input. The “VU Out” is
designed for the qtone AV-1001 Audio Visualiser, this output is after the tone ontrols so is
representative of the signal to the amplifier.
The Amplifier also provides power out from the unit (12V up to 3 amps). Two options are available,
one swit hed and one onstant. The swit hed supply is turned on and off with the amplifier, useful
if an illaries are needed to be turned off with the amp. Conne ting to the onstant permanent
supply will provide power regardless of the amplifiers state; as long as the amplifier is onne ted
to a power sour e.
Spe ifi ations
Supply Voltage 12V
Supply Current 5A
Swit hed Output 12V @ 3A with 8Ω | 1.5A with 4Ω*
Permanent Output 12V @ 3A with 8Ω | 1.5A with 4Ω*
Audio Power Output 10W per hannel @ 8Ω
17W per hannel @ 4Ω
Speaker onne tions Spring terminal
Line Inputs 4 total 3 rear with RCA onne tors
1 front with 3.5mm ja k
Line Outputs 2 rear RCA Audio Out – Before tonal ontrols
VU Meter – After tonal ontrols
Volume Control -92.8dB to +9.5dB
Tone Controls -14dB to +14dB (2dB steps)
Balan e 0dB to -72dB (in 2dB steps)
Input Gain 0dB to 30dB (in 2dB steps)
Controls Digital 4 buttons to sele t input
3 buttons for tonal adjustment
1 button for balan e adjustment
1 button for power
Display 16 x 2 hara ter display
* the outputs share power with the amplifier and ea h other. So there is a total of 1.5A or 3A (depending on speakers
impedan e) between the swit hed and permanent outputs.

User Guide - DA-1001
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Unit Overview
Front Panel Controls
Multi- ontrol Power button
Tone/balan e
ontrols
LCD s reen
Input sele tors
and ontrol
buttons
Front panel
line input
LCD Display
1:INPUT 1
VOL [----------]
Top line – Currently sele ted sour e
( ustomisable name)
Bottom line – Defaults to urrent
volume level. Changes depending on
mode.

User Guide - DA-1001
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Unit Overview
Rear Panel Conne tions
Line inputs Line Output after
tone ontrol
Line output
before tonal
ontrol
Speaker onne tions
12V onstant output
5.5/2.1mm barrel
ja k
12V swit hed output
5.5/2.1mm barrel
ja k
12V input
5.5/2.1mm barrel
ja k

User Guide - DA-1001
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Conne tion Overview
Speakers
When onne ting the speakers ensure the polarities are onne ted orre tly (red/positive on
amplifier to the red/positive on the speaker). If the speakers are onne ted “out of phase” (if one
speaker is onne ted the opposite way to the other) the quality of the sound will be
ompromised. It will sound thin and “tinny”.

User Guide - DA-1001
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Conne tion Overview
Audio Input/Output
The onne tions to the amplifier are via the rear RCA phono onne tions. Ensure the onne tions
are to the orre t left and right so kets. Left is oloured bla k or white and the right hannel is
red.
To onne t a turntable/re ord player you will need a pre-amp as the inputs to the DA-1001 are all
‘line level’. This ould be a separate devi e or some turntables have them built in.
The “Audio Out” an be onne ted to a re ording devi e. This output is onne ted to the output of
the sele tor without any tone adjustments. This will be a dire t opy of the input.
CD Player
Tape Player/Re order

User Guide - DA-1001
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Conne tion Overview
Visualiser Audio Output
A se ond set of outputs are available on the rear of the amplifier. These take the audio after any
tonal adjustments. It is intended for use with the qtone Audio Visualiser (AV-1001). The AV-1001
an also take power from the amplifier, using the swit hed output so the visualiser will turn on
and off with the amplifier.
Be ause the audio is after tonal adjustments, the visualiser will show a representation of the
audio you are listening to.

User Guide - DA-1001
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Unit Overview
Default Setup
When initially turned on the amplifier will be setup to default settings. All the input names are
listed as Input 1-3 and Front Panel (relating to the rear input numbering and the 3.5mm ja k on
the front of the unit). The tone, balan e ontrols and input pre-amp levels are all set to mid
positions.
Basi Operation
Press the Power button to turn on the unit. When the unit is turned on the LCD display will show
the last sele ted input sour e as well as the urrent volume level. In this mode the sour e and
volume an be hanged.
1:INPUT 1
VOL [----------]
1:INPUT 1
VOL [----------]
2:INPUT 2
VOL [----------]
Press Input 2
2:INPUT 2
VOL [----------]
2:INPUT
VOL [##--------]
Turn Multi-
Control
Changing Volume
Rotate the Volume/Multi-Control to sele t the desired volume level, the display will update the
bar-graph to the urrent level.
Sele t Inputs
Press the orresponding Input Sele tor button for the sour e required. LCD will hange to
display the urrent sour e number and name.
Muting Volume
Press the Multi-Control knob to mute the audio. The display will flash between the urrent
volume level and saying MUTE. Press the Multi-Control knob to un-mute. You an also turn the
Multi-Control knob. Turning lo kwise will turn the audio up from zero. Turning ounter-
lo kwise will redu e the volume from the last setting.
2:INPUT 2
VOL [##--------]
2:INPUT 2
VOL [---MUTE---]
Press Multi-
Control
2:INPUT 2
VOL [##--------]

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Press Mid
2:INPUT 2
MID -----||-----
2:INPUT 2
MID -----|}##---
2:INPUT 2
MID ---##{|-----
Turn Multi-
Control
Turn Multi-
Control
Boost
Redu e
Press Bass
2:INPUT 2
BAS -----||-----
2:INPUT 2
BAS -----|}##---
2:INPUT 2
BAS ---##{|-----
Turn Multi-
Control
Turn Multi-
Control
Boost
Redu e
Press Balan e
2:INPUT 2
BAL -----||-----
2:INPUT 2
BAL -----|}##---
2:INPUT 2
BAL ---##{|-----
Turn Multi-
Control
Turn Multi-
Control
Right Bias
Left Bias
Setting Balan e
In order hange the balan e between the left and right speakers, press the Balan e button. The
display will then show the urrent balan e setting. Turn the Multi-Control knob to adjust the
balan e left or right. The amplifier will return to the volume display after 5 se onds of ina tivity
or the same tone button is pressed again.
Press Treble
2:INPUT 2
TRB -----||-----
2:INPUT 2
TRB -----|}##---
2:INPUT 2
TRB ---##{|-----
Turn Multi-
Control
Turn Multi-
Control
Boost
Redu e
Adjusting Tone Settings
In order hange the tone settings sele t the the Treble, Mid-Range or Bass button. The display
will show the sele ted ontrol. The amplifier will return to the volume display after 5 se onds of
ina tivity or the same tone button is pressed again.

User Guide - DA-1001
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Advan ed Setup
Changing Input Name
By default the amplifier will have the input sele tions named based on the input number or
lo ation. These an be hanged to any 14 hara ter name. Press and hold the input that the name
is to be hanged on. The display will then show a flashing ursor on the first letter of the input
name. Turn the Multi-Control knob to hange the letter, use the left and right arrows to move to
another hara ter, the Clr button to lear the urrently sele ted letter and the Ent button to
finish entering and onfirm the name. This will return you to the main volume display.
1:#NPUT 1
IP GAIN [#e----]
Press and hold
required input
Setting Input Sour e Pre-Amp
The amplifier has the ability to boost individual inputs regardless of the urrent volume settings.
This allows for ea h input to be set to provide a onsistent overall volume depending on a devi e.
For example: if one sour e is louder than the others then it an be redu ed so that you wouldn’t
need to adjust the master volume just for that input.
To hange the pre-amp level, enter into the name hange mode and then press the Multi-Control
knob and turn it to adjust the gain up or down.
Turn Multi-
Control
1:JNPUT 1
IP GAIN [#e----]
Press > button
1:J#PUT 1
IP GAIN [#e----]
Press < button
1:#NPUT 1
IP GAIN [#e----]
Press Clr
button
1: NPUT 1
IP GAIN [ĉĉĉ---]
Press Ent
button
1: NPUT 1
VOL [##--------]
1: NPUT 1
IP GAIN [#e----]
1: NPUT 1
IP GAIN [#e----]
Press Multi-
Control
1: NPUT 1
IP GAIN [##r---]
Turn Multi-
Control
1: NPUT 1
IP GAIN [#q----]
Turn Multi-
Control

User Guide - DA-1001
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Settings Menu
SETUP MENU
VER: V . .
Press and hold
required Power
Turn Multi-
Control
SETUP MENU
RGB: LIME
SETUP MENU
RGB} LIME
Press Multi-
Control
Turn Multi-
Control Turn Multi- Control
To hange LCD olour
Press Multi-
Control
OR To onfirm
Turn Multi-
Control
SETUP MENU
BRI:[##########]
SETUP MENU
BRI}[##########]
Press Multi-
Control
Turn Multi-
Control Turn Multi- Control
To hange LCD brightness
Press Multi-
Control
OR To onfirm
Turn Multi-
Control
SETUP MENU
SAT:[##########]
SETUP MENU
SAT}[##########]
Press Multi-
Control
Turn Multi-
Control Turn Multi- Control
To hange LCD saturation
Press Multi-
Control
OR To onfirm
*
*
*

User Guide - DA-1001
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Settings Menu - Continued
Turn Multi-
Control
SETUP MENU
BL TIME:30 MINS
SETUP MENU
BL TIME:30 MINS
Press Multi-
Control
Turn Multi-
Control Turn Multi- Control
To hange ba klight timer
duration
Press Multi-
Control
OR To onfirm
Turn Multi-
Control
SETUP MENU
AMP: MA 3744
1:INPUT 1
VOL [----------]
Press ENTER
Amplifier Dete tion
This will show the type of amplifier
dete ted
MAX3744 – Adafruit Amplifier
DA2004.4 – QTone Amp Interfa e
CUSTOM – No amplifier dete ted
If no board is dete ted CUSTOM is shown
and volume ontrol will be via the tone
ontroller. This means the ‘VU Out’ will be
tied to the volume ontrol and an be used
to input into an external amplifier.
Turn Multi-
Control
SETUP MENU
GPA:[#######---]
SETUP MENU
GPA}[#######---]
Press Multi-
Control
Turn Multi-
Control Turn Multi- Control
To hange global preamp level
Press Multi-
Control
OR To onfirm

User Guide - DA-1001
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Colour Options
1: RED
2: FIRE
3: ORANGE
4: GOLD
5: YELLOW
6: LIME
7: GREEN
8: FERN
9: SAPPHIRE
10: SKY
11: BLUE
12: BERRY
13: PURPLE
14: MAGENTA
15: HOT PINK
16: STRAWBERRY
Brightness/
Saturation
[----------]
[##w-------]
[#####-----]
[#######w--]
[##########]
Ba klight Time
00 MINS
01 MINS
02 MINS
05 MINS
10 MINS
15 MINS
20 MINS
30 MINS
00 minutes turns off
the ba klight timer
Timer turns off mono
LCD and redu es
brightness by 50% with
RGB LCD
*Mono LCD
If a mono LCD display
is dete ted then the
following will be
displayed:
RGB: NA
BRI: NA
SAT: NA
*
Setup Menu - Layout
●VER - Firmware Version
Currently installed firmware
●RGB – LCD Ba klight Colour*
If RGB LCD ba kpa k installed hanges the olour if the LCD ba klight
●BRI – LCD Ba klight Brightness*
If RGB LCD ba kpa k installed hanges the brightness of ba klight
●SAT – LCD Ba klight Saturation*
If RGB LCD ba kpa k installed hanges the saturation of ba klight
●BL TIME – LCD Ba klight Timer
How long to keep ba klight on after hange. After this time passes dims RGB
ba klight or turns mono ba klight off
●GPA – Global Pre-Amp
Sets internal volume redu tion. Redu e this should audio be distorting
●AMP – Currently Dete t Amplifier
Shows whi h amplifier has been dete ted
* These options are only available when the RGB ba kpa k is dete ted.

User Guide - DA-1001
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Fa tory Reset
You an reset the whole amplifier ba k to it’s fa tory defaults. This an be done by holding down
both the Treble and Bass buttons when first applying power to the unit. It will not work when
using the Power button to turn the unit on, only when power swit hed on from the wall so ket .
This will reset the internal memory to the following defaults:
Press and hold
Treble Press and hold Bass Plug in
12V
supply
FACTORY RESET
YES NO
Press < button Press Ent
button
Volume 0dB Input Gain (all inputs) 0dB
Treble 0dB Input 1 Name INPUT 1
Mid-Range 0dB Input 2 Name INPUT 2
Bass 0dB Input 3 Name INPUT 3
Balan e 0dB Input 4 Name FRONT PANEL
1:INPUT 1
VOL [----------]
RESETTING!
DEFAULT RESTORED

User Guide - DA-1001
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Update Firmware/Custom Firmware
On the underside of the unit, at the front, there is a mi ro-USB port. This an be atta hed to a
omputer and updated using the Arduino IDE to add or hange features of the unit.
When there are new firmware updates this port an be used to update/upgrade the amplifier. The
qtone DA-1001 is also designed to be ‘user ha kable’. Be ause the unit uses open sour e
hardware and software ompletely ustom firmware an be added to the unit to hange how it
operates. This is for the brave only! It runs the risk of “bri king” the amplifier (although it is often
possible to re over the unit).
Compiling Firmware From Sour e
You an download the sour e ode for the DA-1001 from the qtone website. You will also need to
install the Arduino IDE (available from www.arduino. ).
To ompile there are a few additional libraries that need to be installed:
1) En oder
2) Boun e2
3) LiquidCrystal_I2C
All of these an be installed using the Arduino’s “Library Manager” in the “Sket h” menu.
●Conne t the amplifier to the omputer and in the “Tools” menu li k Board and sele t “Arduino
Nano”
●Sele t the orre t COM port (see above if unsure)
●Finally li k the “Right Arrow” button to ompile and upload the firmware.

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User Guide - DA-1001
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