Feature
●2.1 Channel Hifi DAC Amplifier Support 24bit/192Khz Audio with EQ Control. 100Watts Class D power amp(50Watt x2@4ohm) with low-pass power subwoofer output and passive speakers output can drive most home speakers. Easy to build your home theater systems and enjoy Hi-Fi music with DA2120A.
●Multiple Input Modes. DA2120A wireless stereo amplifier supporting PC-USB/Optical/Coaxial/3.5MM AUX/Bluetooth 5.0 input can fit with most home Hi-Fi sound systems. Note: Optical interface does not support Dolby/DST audio.
●DA2120A adopts the Texas Instruments NE5532 operational amplifier chip. The DA2120A are high-performance operational amplifier combining excellent DC and AC characteristics, featuring very low noise, high output-drive capability, high unity-gain, maximum-output-swing bandwidths, low distortion, high slew rate, input-protection diodes, and output short-circuit protection. NE5532 are compensated internally for unity-gain operation, with specified maximum limits for equivalent input noise voltage.
●DA2120A with Advanced Digital Amplify Circuits that all analog signals are converted to a digital signal to make the PHASE of input and output signal keep same. Phase shift is zero. Strong anti-interference ability. High efficiency up to 99%.
●What You Get: DA2120A Hifi DAC amplifier x1, Bluetooth antenna x1, 24V/4.5A power supply x1, remote control x1, PC-USB Cable x1, Optical Cable x1, user manual x1, our worry-free 24-month warranty, and friendly customer service.
[DA2120A]
Description
Hi-Fi Home DAC Amplifier
Multi-Function Knob：
Press the button to start up or press 3s to shut down
Press the button to select the input mode
The volume can be adjusted by rotating the knob
Bluetooth 5.0：
External Bluetooth antenna
Up to 65ft (20meter) connection distance in flat area
2.1 Channel HIFI Bluetooth DAC Amplifier
Product Parameters:
- Power Adapter: 24V/4.5A, DC Input Range: 12-24V
- Terminating Impedance: 2-8 Ohm
- MAX Power Output: 50W x 2
- THD: ≤ 0.01%, SNR: ≥ 105dB
- Input Sensitivity: ≤ 280mV
- Frequency Range: 20Hz - 20kHz (±1 dB)
- Input Mode: Bluetooth/3.5MM AUX/PC-USB/Optical/Coaxial
- Bluetooth Transmission Distance: Up to 65 Ft
- PC-USB/Optical/Coaxial Input Sampling Frequency: 192kHz/24Bit
- USB System Supported: XP/W7/W8/W10/MAC/Linux
- 2 Channel Power Amp: BT10A, BT20A, TB10A, TB10D, V1.0B, V1.0G, TDA7498E, ZK-1002, ZK-502T.
- 2.1 Channel Power Amp: BT30D, BT30D Pro, BL20A, BL20C, ZK-TB21.
- DAC: Q4, K5 Pro, DS1, DS2. DAC Amplifier: PH04, DA2120A, DA2120C.
- Subwoofer Amp: TP-02, M01-BT, M02, M03, M04.
- Phono Preamp: BOX X1, BOX X2, BOX X3, BOX X4. Tube Preamp: P1.
- Tube Headphone Amplifier: T20, T20X, P2.
- Class AB Amplifier: T3.
Note：
1: 50W*2 power output suitable for most home speakers
2: In optical input mode, please note that the optical fiber cables should not be folded
3: Optical interface does not support Dolby/DST audio, please turn off Dolby/DST.
If you need a more powerful amp, pick up the BIG BROTHER DA-2120C.
Trouble Shooting:
Why do I get loud hiss noise/ no sound coming from the TV via optical input?
• Please turn off Dolby/DTS audio on your TV or TV App, DA-2120A does not support Dolby/DTS audio input. And please make sure that the output of your TV is a digital output.
Why the DA2120A is lower power, low sound, and the sound cut in and out? Why do I get an intermittent sound?
• Because of the compact design of DA2120A, the positive and negative terminals of the speaker output are very close to each other, so if the + and - of the speaker output are connected or touch together, it will lead to small sound output or no sound output.
Why does the sound crack or make a lot of electric noise?
• Please make sure that the audio source and amplifier do not share a common socket because the same socket is common ground, which will lead to common ground crosstalk.
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2.1CH Wireless Amplifier with Remote
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Digital OLED Display
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MAX Power Output: 100 Watts
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| DA2120A | DA2120C | BT20A | BT30D | BT30D PRO | BL20A | |
| Type | Bluetooth DAC 2.1 CH Amp with Remote Control | Bluetooth DAC 2.1 CH Amp with Remote Control | Bluetooth 2.0 CH Amp | Bluetooth 2.1 CH Amp | Bluetooth 2.1 CH Amp | Bluetooth 2.1 CH Amp with Remote Control |
| MAX Power Output | 50W x 2 | 120W x 2 | 100W x 2 | 50W x 2+100W | 165W×2+350W | 100W x 2 |
| Input | Bluetooth 5.0 + 3.5mm AUX + PC-USB + Optical + Coaxial | Bluetooth 5.0 + RCA + PC-USB + Optical + Coaxial | Bluetooth + RCA | Bluetooth + RCA | Bluetooth + RCA | Bluetooth + 3.5mm AUX + U-disk |
| Output | Passive Speakers + Active Subwoofer | Passive Speakers + Active Subwoofer | Passive Speakers | Passive Speakers+Active/Passive Subwoofer | Passive/Active Speakers+ Passive/Active Subwoofer | Passive Speakers + Active Speakers/Amplifier/Active Subwoofer |
| Treble & Bass Control | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| THD | ≤0.01% | ≤0.01% | ≤ 0.04% | ≤ 0.04% | ≤ 0.3% | ≤ 0.001% |
| SNR | ≥105dB | ≥110dB | ≥ 98dB | ≥ 98dB | ≥ 85dB | ≥ 92dB |
| Terminating Impedance | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm | 2-8 Ohm |
| Power Adapter | 24V/4.5A | 32V/5A | 24V/4.5A | 24V/4.5A | 32V/5A | 24V/4.5A |
| Work Voltage | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V | AC 110V - 240V |
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| Q4 | DS1 | PH04 | T3 | TDA7498E | Bluetooth Antenna | |
| Type | DAC+Headphone Amp | DAC+Headphone Amp | Headphone Amp | Bluetooth Tube 2.1 CH Amp | 2.0 CH Amp | Bluetooth Antenna Male Plug |
| MAX Power Output | Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. | 120mW@32 Ohm(SE); 220mW@32 Ohm(BAL) | 40mW@100 Ohm | 50W x 2 | 160W x 2 | - |
| Input | PC-USB + Optical + Coaxial | Type C+ USB A | 3.5mm AUX | Bluetooth + 3.5mm AUX1+3.5mm AUX2 | RCA | - |
| Output | RCA + 3.5mm Headphone | 3.5mm Headphone+ 4.4mm Headphone | 3.5mm Headphone | Passive Speakers + Active Subwoofer+ Headphone | Passive Speakers | - |
| Treble & Bass Control | ✓ | x | x | ✓ | x | - |
| THD | ≤0.01% | ≤ 0.0006%(SE) ≤ 0.001%(BAL) | - | ≤ 0.1% | ≤ 0.04% | - |
| SNR | ≥105dB | ≥120dB | - | ≥ 80dB | ≥ 98dB | - |
| Terminating Impedance | 16-200 Ohm | 16-300 Ohm | 15-150 Ohm | 4-8 Ohm | 2-8 Ohm | - |
| Power Adapter | - | - | - | - | 24V/4.5A | - |
| Work Voltage | DC 5V | - | DC 12V | AC 110V - 240V | AC 110V - 240V | - |