digi-tech AA2112 User manual
This multi-directional dongle can be set up to transmit or receive. In transmit mode, it can stream an audio source
to a Bluetooth® capable receiver or standalone Bluetooth speaker. In receive mode, it can receive streaming from
a Bluetooth capable computer, Smartphone, and more, to play on your stereo system, computer, headphones,
etc. It retains full digital quality with digital SPDIF/TOSLINK inputs and outputs, but also includes an analogue
AUX input and output for older systems. The device supports the latest Bluetooth 5.0 technology, and allows
two Bluetooth devices to be paired at the same time. Its compact size and internal rechargeable battery makes it
extremely portable. A 2 hour charge provides up to 12-15hrs send/receive time.
Package Contents:
A. Bluetooth Transmitter & Receiver
B. 3.5mm Audio Cable
C. Micro USB Charging Cable
D. User Manual
E. TOSLINK Optic Cable
Audio Transmitter and Receiver Dongle
with Bluetooth® 5.0 Technology
AA2112
User Manual
Manual
2. Basic Operation
Button Function Operation
MFB (Multi Function Button)
Power on/off Press MFB button for 3 seconds to
turn power on or off.
Play / pause
RX Mode: Press MFB to play or
pause music during playing.
Does not work in TX mode.
Enter Pairing Mode
Double press MFB to enter into
pairing mode. (Does not work in
Multi Point Connections)
(RX: Red & Blue LED flash
alternately; TX: Blue LED flash
quickly)
TX/RX Mode Selection
Slide to TX side or RX side to select the TX or RX mode.
• The last mode will be delete when switched to another mode.
• Switch to another mode after item turn off at least 3 seconds.
SPDIF/AUX mode selection Power off or on status, slide to SPDIF side or AUX side to select the SPDIF
or AUX mode.
MFB Multifunction Button
Power Indicator
AUX In/OutTX Digital
RX Analogue Digital In Power
Digital Out
3. How to use as a Bluetooth Transmitter (TX)
3.1 Bluetooth Pairing and Connection
A. Off mode, turn to TX switch and long press MFB 3 seconds to power on.
B. Double press MFB to enter into pairing mode with Blue LED flash.
C. Turn on the Bluetooth function of your device (Bluetooth Headphone, Speaker or receiver etc.) to pairing mode,
with Red & Blue LED flash alternately or Blue LED flash.
D. Place the AA2112 and your device close and wait in 5-30 seconds for connection, LED turns to low Blue LED
flash after connected.
E. Connect AA2112 and your phone with 3.5 mm audio cable, and could play music from your phone to the
headphone or speaker.
1. Off mode, slide to TX side.
2. Long press MFB 3 seconds to power on , and double press MFB to enter into pairing mode with Blue LED flash.
Turn on the Bluetooth function of headphone or speaker to enter into pairing mode.
3. Place the AA2112 and your device close and wait in 5-30 seconds for connection, Blue LED turns to slow flash
after connected.
4. Slide to SPDIF side or AUX side to select the SPDIF or AUX mode (SPDIF port in TX mode is SPDIF IN).
3.2 Multi Point Connection
A. Follow 3.1 to connect with the first device, double press MFB to enter into pairing mode again with Blue LED
flash.
B. Turn on the Bluetooth function of the second device (Bluetooth headphone, speaker or receiver etc) to enter
into pairing mode. Place the AA2112 and your device close and wait in 5-30 seconds for connection. AA2112 solid
Green LED after connected with two devices.
Notes:
*Pls turn off AA2112 and turn on again, and try to reconnect or repair with two devices, when it could not connected
with two devices at the first time.
*Multi point connection could compatible with most of the chipset solution at the market, except less of them.
*Single connection priority support aptX™ low latency (connected device also support aptX™ low latency). Two
connections priority support aptX™ low latency (connected devices also support aptX™ low latency). Two
connections priority support aptX™ (connected devices also support aptX™). Two connections turn to SBC
automatically if the CODEC are different.
3.3 TV Connection
Connect AA2112 and the TV with 3.5mm audio cable or fibre optic cable, and Bluetooth connect AA2112 with
devices ( Bluetooth headphone or speaker ), and could transmit the audio from TV to the devices.
Notes:
*Pls test the TV with wired headphone or check the TV’s audio settings (Select 3.5mm output ) to make sure the
devices connect in the right way and play audio from the TV.
*Pls connect the TV and SPDIF IN port with fibre optic cable when select the TOSLINK connection mode.
4. How to use as a Bluetooth Receiver (RX)
4.1 Bluetooth Pairing and Connection
A. Off mode, turn to RX switch, long press MFB 3 seconds to power on.
B. Double press MFB to enter into pairing mode with Red & Blue LED flash alternately.
C. Turn on Bluetooth function of Phone, search and click to connect AA2112 on Bluetooth device lists.
D. LED turns to solid Blue after connected, connect AA2112 and headphone or speaker with 3.5mm audio cable,
play music from phone to the headphone or speaker.
1. Off mode , slide to RX side.
2. Long press MFB 3 seconds to power on , and short press pairing button to enter into pairing mode with Red &
Blue LED flash alternately.
3. Turn on Bluetooth function of phone (PC, laptop), search and click to connect AA2112.
4. Slide to SPDIF side or AUX side to select the SPDIF or AUX mode (SPDIF port in RX mode is SPDIF OUT).
AA2112
4.2 Multi Point Connections
A. Follow 4.1 to connect with the first device (phone, PC, laptop), double press MFB to enter into pairing mode
again, red and blue lights flash alternately. (The first connected device is not affected and can be used normally).
B. Double press AA2112 pairing button to enter into pairing mode again with Red & Blue LED flash alternately.
C. Turn on Bluetooth function of the second phone, search and click to connect AA2112 on phone Bluetooth lists.
Multi point connection with solid green LED.
Notes:
1. Only could play music from one phone when with two connections.
2. Priority support aptX™ low latency for one connection(Connection device support aptX™ low latency), support
CODEC according to the phone which playing music for two connections.
4.3 Speaker Connection
Connect AA2112 and Speaker with 3.5 mm audio cable, and Bluetooth connect with phone (PC, laptop), play music
from your phone to speaker.
Notes:
*Pls test the speaker with 3.5 mm audio cable (connect phone) to see if workable, if could not play when connect
with AA2112.
*Pls insert to SPDIF OUT port for TOSLINK connection.
5. Charging
ls charging AA2112 when low battery with Red LED flash. LED turn off when full charged (about 2 hours ).
Connection for charge
Connect AA2112 and power supply (charger , car charger , computer USB etc )with Micro USB cable.
Notes:
*Pls charge the AA2112 at least once every 2 months if without use.
*Pls press “MFB” and connect with power supply to reset the item , when it dead during use.
*It is normal for charging LED indicator to cover the bluetooth status LED indicator when power on.
6. LED Indicator
Status LED Indicator
Power On Blue LED Flash Twice
Power Off Red LED Flash Twice
Pairing Mode
Blue LED Flash (TX Mode)
Red & Blue LED flash alternatively (RX Mode)
Disconnect Standby Mode Blue LED flash once every second (TX mode)
Unconnect standby mode
Blue LED flash once every second (TX mode )
Blue LED flash twice every 3 seconds (RX mode )
Connected standby mode Solid Blue LED
Low battery Red LED flash
Charging Solid Red LED
Full charged Red LED turn off
7. Product Specification
Bluetooth Version: V5.0
Chipset Solution: CSR 8670
Operation Range: Class II, 10 metres
Bluetooth Profile: A2DP, AVRCP
CODEC:
Receiver: aptX™ low latency, aptX™, AAC, SBC
Transmitter: aptX™ low latency, aptX™, SBC
Battery Capacity: 3.7V, 350mAh
Charging Time: 2 hours Approximately
Standby Time: 50 hours Approximately (In Receiver Mode)
Working Time:
AUX: 15 hours Approximately
SPDIF: 12 hours Approximately
Weight: 39g
Dimensions: 60(W) x 60(D) x 18(H)mm
Notes:
1. Working time will be different depend on different working environment and CODEC.
2. Standby time will be same as working time on TX mode, as it will be working once connected.
3. CODEC code depend on the connected devices and follow the turns as mention.
8. Attention and Q & A
Q. Power off automatically?
A: Without connect with any devices for more than 5 minutes the item will power off automatically in RX mode (6
minutes if have pairing record), except in TX mode.
Q. How to reconnect?
A: AA2112 will reconnect with paired devices when power on. If not , pls follow the 3.1 or 4.1 to pair & connect again.
Q. How to delete the paired records?
A: Switch to another mode (TX or RX) and power on, will delete the paired records of the last mode. (Pls switch to
another mode after 3 seconds from power off in last mode.)
Q. Password for connect?
A: Please enter “0000” (four zero), “8888” (four eight), ”1111” (four one), or “1234” (one, two, three, four) for some
devices which need password to connect .
Q. Could not power on or dead when connect?
A: Press MFB and connect with power supply to reset the item, and repower for use.
Q. Charging power supply?
A: Charging power supply: 5V, ≥500 mA. (Charger, car charger , computer USB etc).
Distributed by:
TechBrands by Electus Distribution Pty. Ltd.
320 Victoria Rd, Rydalmere
NSW 2116 Australia
Ph: 1300 738 555
Int’l: +61 2 8832 3200
Fax: 1300 738 500
www.techbrands.com
Made in China
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