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 [##--------]

User Guide - DA-1001
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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.