Fosi Audio BL20C Bluetooth USB Stereo Amplifier
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Fosi Audio BL20C Bluetooth USB 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
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FAQ’s
If you have any questions, please refer here: FAQs
Product details
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Bluetooth Amplifier, 2 Channel Amplifier2.1CH Bluetooth 5.0 Stereo Amplifier. Features buttons to switch the previous/next song. The Bass & Treble buttons are easy to use to meet your different needs.
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U-disk input for convenient and portable use. Audio Input: U-disk/ Bluetooth/ RCA. Audio Output: Powered Subwoofer + Passive Speakers. Support MP3/WMA/APE/ FLAC/WAV U-disk audio input, up to 32GB capacity.
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Adopting classic TDA7498E chip to get clear and clarity sound without any audible noise even at high output. Advanced circuit design ensures Hi-Fi sound, compatible with iPhone/Android, iPod, iPad, PC, Laptop, TV, DVD, etc.
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160Watt x 2(DC19-35V, 98dB SNR, 0.05% THD), included high quality 24V/4.5A power supply enough to drive most passive speakers and powered subwoofer.
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What you Get: BL20C Bluetooth amplifier x1, User Manual x1, Power Adapter x1(Optional 24V or 32V), AC Cord x1, an 18-month worry-free warranty, and friendly customer service.
Specifications
| Specifications | Details |
|---|---|
| Model | BL20C |
| Input mode | U-disk/Bluetooth/RCA |
| Output mode | Powered subwoofer+ Passive Speakers |
| Input priority | U-disk＞Bluetooth = RCA |
| SNR | ≥98dB |
| THD | ≤0.05% |
| Working voltage | 19-35V |
| U-disk | USB 2.0, compatible with USB 3.0 |
| U-disk capacity | Max 32GB, no more than 100MB per file |
| Support format | MP3/WMA/APE/ FLAC/WAV |
| Max output power | 160 Watt×2 + Any powered subwoofer |
What‘s in the box？
| Item | Quantity |
|---|---|
| Fosi Audio BL20C Amplifier | x 1 |
| 24V 4.5A Power Supply | x 1 |
| User’s Manual | x 1 |
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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 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.
I did a Bi-Amp setup with 2 BL20C-N amps and paired them with a pair of Martin Logan B-100 speakers. The speakers were a little pricey $1500 per pair, but that with 2 $100 amps sounds unbelievable. One amp drives the woofers and the other drives the tweeters. Tons of controls to really tune in your particular listening preference. Thanks for a great product.
I did a Bi-Amp setup with 2 BL20C-N amps and paired them with a pair of Martin Logan B-100 speakers. The speakers were a little pricey $1500 per pair, but that with 2 $100 amps sounds unbelievable. One amp drives the woofers and the other drives the tweeters. Tons of controls to really tune in your particular listening preference. Thanks for a great product.
Tried with all sort of speakers works good.
speaker connectors bit flimsy.
Size is compact, needs aerated place
Tried with all sort of speakers works good.
speaker connectors bit flimsy.
Size is compact, needs aerated place
Purchased in 2021. International shipping took some time (about 4-5 weeks for me) but it was well worth the wait. The amplifier is well built, very powerful, and great quality (especially for the price). The Bluetooth functionality works really well too, I can have a device remain connected even on the far side of the house, and no choppiness at all. Lastly, I have had tons of people comment on its small size. After 4 years, it still works perfectly.
Purchased in 2021. International shipping took some time (about 4-5 weeks for me) but it was well worth the wait. The amplifier is well built, very powerful, and great quality (especially for the price). The Bluetooth functionality works really well too, I can have a device remain connected even on the far side of the house, and no choppiness at all. Lastly, I have had tons of people comment on its small size. After 4 years, it still works perfectly.
Fosi Audio BL20C Bluetooth Stereo Receiver Amplifier 2.1 Mini HiFi Class D Amp U-Disk Player For Passive Speaker 160W x2
Fosi Audio BL20C Bluetooth Stereo Receiver Amplifier 2.1 Mini HiFi Class D Amp U-Disk Player For Passive Speaker 160W x2
I’m still waiting for this delivery after 20 days,
I��m still waiting for this delivery after 20 days,
Works like a charm. I was able to give my old but gold speakers a great live again without the need of some huge amplifier. This is exactly, what I need!
Works like a charm. I was able to give my old but gold speakers a great live again without the need of some huge amplifier. This is exactly, what I need!
Good service!
Good service!
The equipment is built well, but if you need answers or have questions, there is no contact number to call. E-mail only which is slow to respond and does not fully address the issue.
The equipment is built well, but if you need answers or have questions, there is no contact number to call. E-mail only which is slow to respond and does not fully address the issue.