Sure Electronics A2100 User manual

Audio Amplifier
SURE A2100
SURE A2100
Audio Amplifier
Hifi Sound Quality
Diversified Audio Connecvity
Reliable and Cost Effecve
Specially Designed for Desktop Audio System
2 x 100 Wa
2 x 100 Wa
Explorer
Explorer

1
Benefits
Support Mulple Audio Input Source
There are five various input methods for audio amplifier.
a) Audio signal input terminal (RCA) —LED blink once
b) Audio signal input terminal (3.5mm) —LED blink twice
c) Bluetooth signal input —LED blink three mes
d) Opcal fiber input terminal —LED blink four mes
f) USB Sound Card —LED blink five mes (Available for next version)
The priority of Input signals:
RCA 3.5mm Bluetooth Opcal fiber USB Sound Card
Bass Output for Subwoofer (Available for next version)
There is a subwoofer output via RCA jack at the rear panel. When this jack is plugged in, the amplifier will
transmit the low frequency via the RCA. You can feed this output signal to your own subwoofer amplifier.
Meanwhile the bass level could also be adjusted with the POT on the back panel.
IR Remote and Rotary Encoder Switch Control
With the remote controller accompanying our product, you could operate several funcons as follow:
a) Operaon/ Standby.
b) Volume control.
c) Switching audio signal channel.
Also the rotary encoder switch is able to do the same job precisely.
Full Protecon and Low Power Consumpon
Besides of built-in chip protecon,including undervolatge protecon, overvoltage protecon,
overtemperature protecon, overcurrent protecon, ESD and spike protecon components used
throughout input and output of the amplifier board ensure its robustness and reliablity.
The standby power is less than 0.5Wa at 24Volts.
High Performance Stereo Headphone Amplifier
The HP amp delivers up to 80mW per channel into 32ohm and has THD+N as low as 0.02%. Thanks to the
differenal input topology and high PSRR, the noise canclaon is enhanced. Audible clicks and pops on
startup and shutdown is also suppressed.
Aluminium Anodizing Housing
It is made of allumimium alloy so that it can resist scraching.
Its overall streamlined and sturdy dark black appearence reflects elegant fashion. Each connector is
marked with a cute icon, making it look simple and conveient for user to operate.
Technical Support
As we have standard products in stock, we can assure you of our mely delivery so that you can achieve
the zero inventories.
We also provide OEM, ODM businesses in various categories to some partners according to Sure’s Policies.
Welcome to join Sure Electronics as a distributor today. You can start experiencing the unparalleled
benefits of membership.
Please feel free to contact st[email protected] if you have any requirements.
Or please visit www.sure-electronics.com for more informaon.

Component and Funcon
2
1
2 3
4
1—3.5mm audio input
2—3.5mm headphone output
3—Volume knob
4—IR remote receiver
+- - +
7
8
+- - +
1
2
3456
7
8
1—Speaker output 2—Power input
3—USB sound card*
4—Subwoofer output
5—Subwoofer volume control* 6—Audio signal input (RCA)
7—Opcal fiber input 8—Bluetooth receiver
* Available for next version
+- - +
Power
Connecon
3
FIGURE 3-1 Front panel FIGURE 3-2 Rear panel
To subwoofer amplifier From MP3,
CD player,etc.
From set top box,
desktop,etc.
Adjust the bass
level by pot
Available for
next version
Available for
next version

How to Connect?
4
How to Adjust the Volume?
6
+ -
+
-
Volume +
Volume -
We adopt digital volume potenometer of high-quality in Classic series
which can adjust the volume precisely aer long-me use.
Clockwise rotaon —Volume +
Anclockwise rotaon —Volume -
Volume will not be changed during the further adjustment when reach to maximum
or minimum level.
How to Switch Modes?
5
Operaon/ Standby
Push on the volume knob to switch between operaon mode and standby mode.
TABLE 2-2 SWITCH FUNCTION
State Funcon LED state
Standby Amplifier not
working
LED lighng in a breathing-effect
state
Operaon Amplifier working LED turn off
1. 3.5mm Jack or RCA
It is suggested to finish the connecon before you power up the amplifier. Hot plug-in is not recommanded.
2. Bluetooth
Aer power up the amplifier, just pair BT device "SURE-A2100" with your mobile device without PIN number. Only
one mobile device is allowed to be connected every me.
3. Toslink
Plug two ends of a TOSLINK cable into the TOSLINK ports on the both sides seperately. And set output data with
48KHz sampling rate and 24-bit word length.
4. USB DAC (Available for next version)
You may connect the computer's USB to the amplifer microUSB port with a USB cable.

How to Switch Channels?
7
Q&A
8
Channel +
Channel -
No sound
1. Check if it is connected with the power and confirm that the voltage regulator
works well. If not, connect the power according to the connecon schemacs.
2. Check if the signal input cable is connected correctly and if there is signal. If not,
connect the cables according to the schemac and input the audio signal.
3. Check if the output cable is damaged and if the speaker works or not. If not,
change the output cable and the speaker.
4. Check if the LED keeps off or not. If not, restart it and ensure that the LED displays
breathing effect in standby. If it sll doesn’t work, remove the power and contact us
.
Suddenly no sound
when the product is
working
1. Check if the product
Situaon Soluons
has worked for long me or if the audio signal is too high. If
it is, turn off the power and turn it on again.
LED off
1. Check if it is connected with the power and confirm that the voltage regulator
works well or not. If not, correctly connect it to the power according to the
schemacs.
Note: If the problems above sll cannot be solved, maybe the product has something wrong. Now please turn off the
power, pull out the power cord from the socket and then contact us. Please refer to chapter eleven for our contact
informaon.
There are five various input methods for audio amplifier.
a) Audio signal input terminal (RCA) —LED blink once
b) Audio signal input terminal (3.5mm) —LED blink twice
c) Bluetooth signal input —LED blink three mes
d) Opcal fiber input terminal —LED blink four mes
f) USB Sound Card —LED blink five mes (Available for next version)
The priority of Input signals:
RCA 3.5mm Bluetooth Opcal fiber USB Sound Card
You can switch channels by pushing and rotang the knob.
Also you can switch channels by using remote controller.
+ -
No sound with Opcal 1. Only supports 48KHz sampling rate, 8/16/24-bit word length.

Specificaon9
Contact Us
11
Mechanical Drawing10
FIGURE 6-1 Front panel FIGURE 6-2 Rear panel
124/ [4.88]
120/ [4.72]
FIGURE 6-3 Side view
217/ [85.43]
4/ 0.16
mm [inch] mm [inch]
mm [inch]
Parameters Condions Min Typ Max
Power Supply Range(VDC) 12 24 32
Idle Power(W) 0.4 0.5
Standby Power(mW) Only When Low Power Module Available 2 10
Input Sensitvity(mV)
RCA,24V @ 4Ω, 100W 700 775 850
3.5mm 700 775 850
Bluetooth 700 775 850
USB Sound Card 700 775 850
Toslink/ Coaxial 700 775 850
Supports Sampling Rate(KHz) 48
Digital Audio Input Coaxial or Toslink
Input Impedance(KΩ) RCA / 3.5mm 15 20 25
Gain(dB) 23 26 29
Output Power for Speaker(W) 24V @ 4Ω,THD+N=10% Single Channel 100
Efficiency
100W,24V @ 4Ω Single Channel
85%
88%
90%
24V, No Audio Input
/
/
/
,24V @ 4Ω, 100W
/
,24V @ 4Ω, 100W
,24V @ 4Ω, 100W
,24V @ 4Ω, 100W
Open space, no phsical obstrucons
/
BT Wireless Range(M)
/
// 10
/ /
Main Product
Combinaon Product
SKU Price Item Listed Price
AA-AS32189 2 X 100W A2100 Class D Audio Amplifier Explorer $69.90
PS-SP11575 Mean Well GS120A24-R7B Desktop Adapter Power
Supply 24V
5A 120W $49.90
MB-CM11111 Small 7-key
Remote
Control $5.99
SKU Price Item Listed Price
AA-AC11158 2 X 100W A2100 Class D Audio Amplifier Explorer
with Bluetooth, Remote Control & Adapter $119