4: Does the DA-2120C support Bluetooth 5.0 & aptX?
• The DA-2120C supports Bluetooth 5.0 and backwards
compatibility with 4.2, 4.0, etc. Also, the DA-2120C supports
Bluetooth aptX.
5: Why can't I use aptX to connect to the DA-2120C?
• The DA2120C supports aptX but still requires a Bluetooth device
e.g. mobile phone) that also supports aptX to work. Please check
that your Bluetooth device has aptX enabled or seek support from
your Bluetooth device's customer service for further assistance.
6: Can I use headphone with this product?
• No, the DA-2120C cannot be connected to headphones and only
supports passive speakers or active subwoofer output.
7: Why does the sound is cracking or make a lot of
electric noise?
• Please make sure all the cables completely pushed into the
devices, incompletely connection will cause this cracking.
• Please remove all the inputs then check whether cracking noise
disappear or not, the cracking maybe from the audio source or
input cables.
• If you are not using the original factory standard power supply,
please replace the power supply before testing. Many power
supply in the market have large interference coefficient, which
will cause a lot of current sound.
8: My Bluetooth device can’t pair with DA2120C?
• Make sure that DA2120C Bluetooth mode is on and “BT” display
is flashing; “BT” display is always on to indicate that it is
connected
Step 3: Set the TV's coaxial output sound to RAW/PCM. (NOTE:
Due to different TV types, some TVs default Dolby or DTS
sound output, DA-2120C DOES NOT support Dolby and
DTS sound, please select RAW/PCM sound, otherwise you
will hear a lot of noise or no sound output.)
Step 4: Open the audio application, play and enjoy!
RCA for example
Prepare: RCA device (phone for example), 3.5mm to RCA cable (no
include) or RCA to RCA cable (some devices will need)
Step 1: Connect the phone to DA-2120C’s RCA interface via the
3.5mm to RCA cable;
Step 2: Press the Mode Select Knob to select to AUX mode;
Step 3: Open the audio application, play and enjoy!
Troubleshooting/QA
1: Why do I get loud hiss noise coming from the TV via
optical input?
• Please turn off Dolby/DTS audio on your TV or TV App, DA-2120C
does not support Dolby/DTS audio input.
2: Why am I not getting enough power from DA-2120C to
compare to a 50W x2 amplifier?
• For low power, please long-press remote: "DISPLAY" to boost
gain to +6dB.
3: Can this product be used at 220 volts?
• Yes, the power supply can work at any AC 110V-240V.
