Fosi Audio DA2120B Bluetooth Amplifier Stereo Audio Wireless Amp Hifi Class D Power Amp 100W x2 Passive Speakers Remote Control

$159.99 $139.99 -12%
An Upgraded Version of Fosi Audio DA2120A: A ultra mini Bluetooth 5.0 audio amplifier for passive speakers that features stereo 100 watt x2 power to provide you with high-fidelity streaming music. Features with 6 kinds...
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Overseas warehouse shipping 3-5 days, China warehouse shipping 7-15 days.
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  • An Upgraded Version of Fosi Audio DA2120A: A ultra mini Bluetooth 5.0 audio amplifier for passive speakers that features stereo 100 watt x2 power to provide you with high-fidelity streaming music.

  • Features with 6 kinds of input modes: A mini DAC Bluetooth amp that features Bluetooth, USB, coaxial, optical, 3.5mm aux, and USB flash disk inputs, which gives you more options when listening to high-quality music.

  • With Bass and Treble Control: as soon as you use the remote control to control the bass and treble sound as you like, you can get different excellent HiFi sounds.

  • Up to 50ft: Bluetooth transmission distance & 20ft remote control distance: Super long Bluetooth transmission distance and remote control distance ensures you connect and control audio devices from a distance at home.

Fosi Audio DA2120B Bluetooth Amplifier Stereo Audio Wireless Amp Hifi Class D Power Amp 100W x2 Passive Speakers Remote Control


Specifications Details
Model DA2120B
Output Power 100W + 100W @4Ω
Terminating Impedance 2-8Ω (Recommended 4ohm)
Input Mode Bluetooth + USB + Coaxial+ Optical + 3.5mm AUX + USB Flash Disk
Output Mode Passive Speakers
Frequency Range 15Hz - 20kHz
USB Input Sampling Frequency 16Bit/48kHz
Optical/Coaxial Input Sampling Frequency 32Bit/192kHz
THD ≤ 0.001%
SNR ≥ 92dB
Input Sensitivity ≤ 280mV
USB Flash Drive Storage 32GB
USB System Supported XP/W7/W8/W10/MAC/Linux
Bluetooth Transmission Distance Up to 50ft
Remote Control Distance Up to 20ft
Device Dimension 5.5*4.3*1.3inch
Power Supply 24V 4.5A

What‘s in the box?

Item Quantity
DA2120B Amplifier x 1
24V 4.5A Power Supply x 1
Remote Control x 1
RCA Cable x 1
PC-USB Cable x 1
Optical Cable x 1
User’s Manual x 1


Compare with similar items

DA2120A+24V Bluetooth Amplifier 2CH 50WX2
DA2120C+32V Bluetooth Amplifier 2.1CH 120W x2
DA2120D+24V Bluetooth Amplifier 2.1CH 100W x2

Worldwide Shipping

We can ship to any country or region in the world. Shipping is free worldwide, except for special regions/countries where we are unable to offer shipping, such as Ukraine.

1. Overseas warehouse delivery
2. China(Shenzhen) delivery

1. Overseas warehouse delivery

Overseas warehouse delivery: United States, Canada, United Kingdom, Germany, France, Italy, Netherlands, Portugal, Spain, Sweden and Hong Kong, Macau, Taiwan in China are free shipping for you.

Order processing time: All orders require 1 business day for preparation and packaging, excluding Saturdays and Sundays. Holidays will be extended according to China's legal time.

Pre-order products: The shipping date is based on the specific product labeling.

After shipment, you can track your order. To track your order, please click here.
United States, Canada, United Kingdom: 3-5 days.
Germany, France, Italy, Netherlands, Portugal, Spain, Sweden: 3-7 days.
Other countries:3-10 days.

Note: If there is a stock shortage in the overseas warehouse, the delivery time may be extended by 5-15 days. We will contact you via email, and you can also inquire with our customer service regarding the delivery status. 

2. China(Shenzhen), shipping worldwide via 4px.

Order processing time: All orders require 1 business day for preparation and packaging, excluding Saturdays and Sundays. Holidays will be extended according to China's legal time.

Pre-order products: The shipping date is based on the specific product labeling.

After shipment, you can track your order. To track your order, please click here.
Ships from China warehouse, standard shipping usually takes 5-15 days, fast shipping takes 3-7 days ($25 shipping fee applies)

Note: If there is a stock shortage in the China warehouse, the delivery time maybe extended by 5-15 days.
We will contact you via email, and you can also inquire with our customer service regarding the delivery status.

Not all products have stock in other warehouses. If you require urgent delivery from another warehouse, please confirm with us first. 
If your order does not display any shipping time, it is usually because you have purchased multiple products, each from a different warehouse, resulting in the inability to display the normal shipping time. It will default to 5-15 days. 
If you have any questions, please feel free to contact us.


European Union (EU) Countries:

For shipments from the China warehouse to EU countries: 

The final price you see on the official website includes taxes.This way, you don't have to pay the taxes yourself, saving you time and effort.
However, if you prefer, you can choose to pay the taxes yourself, and we will refund the taxes paid through our platform.

Other Countries:

The final price you see on the official website does not include taxes. Imported goods/services may be subject to taxes and are governed by local country/region laws. We do not collect any taxes or value-added taxes, nor do we assume any tax liability. 
If you have specific requirements, please contact us.

For countries with complex customs procedures, such as South America, we recommend ordering through AliExpress or finding a recipient in North America to assist with the shipment.

 Note: Remote addresses may experience longer delivery times and incur additional costs.

✓ 30 Days Free Return

At Fosi Audio, we always strive for the highest customer satisfaction. If you are dissatisfied with the product or if it has any defects, you can request a return or refund.

Within 30 days of purchase, for any reason whatsoever, undamaged products can be returned for a full refund. Once the returned items are inspected upon arrival at our warehouse, the refund process will be initiated.

Items must be in their original packaging. For non-quality related return requests, the buyer is responsible for the return shipping costs. Returns that do not meet the above requirements may be rejected.

We cover return shipping costs for the following situations:

  1. Defective parts.
  2. Damaged equipment.
  3. Incorrectly shipped items.

The 30-day period starts from the day you receive the item.

*If your order exceeds the 30-day free return period and it is still unopened, you may still apply for a return. However, you will need to bear the return shipping costs, and a 15% restocking fee will be charged. (This situation only applies to products purchased from

How can I initiate a return?

  1. Please contact Fosi Audio customer support to initiate the return. Explain the reason for the return and provide the invoice or screen capture to confirm the order number.
    customer support email:
    Phone: 00852-67645515
  2. Fosi Audio customer support will provide you with the return address within 1-2 days.
  3. To expedite the refund process, make sure to send the return notification to Fosi Audio customer support with the following information:
  • tracking number
  • shipping receipt (If shipping fee refund needed)
  • PayPal account (If shipping fee refund needed)

How long will it take to receive the refund?Once the returned items reach our warehouse, we will promptly process the refund. The refund will be made using the same method as your original payment. The processing time usually takes 3-5 business days.

Customer Reviews

Based on 1 review
Steve Dickens

I'm very impressed with the ability of this tiny DAC and amp to send sound from my PC to my passive speakers (100 watt/8 ohm each). Great sound.