Fosi Audio BT20A Bluetooth Stereo Amplifier
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Fosi Audio BT20A Bluetooth Stereo Amplifier
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
Mon-Fri: 3:00 AM - 3:00 PM PST -
FAQ’s
If you have any questions, please refer here: FAQs
Product details
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100W X 2(4 ohms, 20 Hz - 20 kHz, 0.04% THD), comes with a 24V power supply. If your usage scenario is smaller, it can also drive larger speakers, such as those rated at 280 watts (8 ohms) and 320 watts (4 ohms). Please note that this is applicable only for passive speakers.
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Advanced circuitry design, built-in speakers protection circuit, best for bookshelf/computer/desktop/speakers in your home;
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Home integrated digital amplifier, 24-month warranty, you can return the item if you have any problems;
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Small simple compact design but practical and powerful, Hi-Fi Bluetooth amplifier exclusively designed for the customers who pursue HiFi sound;
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Bluetooth 5.0 core, up to 33ft connection range guarantees low signal delay. No pop, no audible noise when Bluetooth connection is established;
Specifications
| Specifications | Details |
|---|---|
| Power supply range | 12v-24v |
| THD | ≤ 0.5% |
| Frequency Range | 20Hz - 20kHz (±1 dB) |
| SNR | ≥ 98dB |
| Input sensitivity | ≤ 280mV |
| Bluetooth transmission distance | 28ft |
| Terminating impedance | 2Ohm - 8Ohm |
| Output power | 100W + 100W |
| Input mode | Bluetooth and Analog |
| Bluetooth Name | Fosi Audio |
| Bluetooth chip | ATS2853 |
| Power supply | 24V 4.5A |
What‘s in the box？
| Item | Quantity |
|---|---|
| Amplifier | 1 |
| Power supply | 1 |
| AC power cord | 1 |
| User’s Manual | 1 |
Tips: The plug of the power adapter will match the country of your delivery address.
FAQs
Please read our FAQs page to find out more.
How to: Choose the right banana plug?
- Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
- Easy to wire up and solidly connect to amplifier and passive speaker.
- If they do not fit, use a little force to tighten the plugs.
- Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
- Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
- The following situations may cause this issue
- Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
- Possible solution
- Check if the power supply is illuminated when plugged into AC by itself.
Plug power supply into a different socket.
Test the adapter with a meter.
Try a different power supply (within a range of DC input).
Test the included power supply on other electrical equipment.
Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What are the differences in power outputs using the 32V and 48V power supplies?
- Using a more powerful power supply can help prevent distortion.
- Enables amplifier to drive larger, more powerful, or higher-impedance speakers.
What is a GaN?
- The GaN supply has a power output of 240W.
- Offers overload and over-temperature protection.
- The 48V 5A GaN power supply is also available on Amazon.