Fosi Audio T3 Bluetooth 5.0 Hybrid Stereo Tube Amplifier Class AB with Headphone Sub Out

$149.99 $129.99 -13%
Fosi Audio T3 is a Hi-Fi Bluetooth 5.0 stereo tube amplifier that offers a warm and natural sound quality, superb audio fidelity, and efficiency. You can build a 2.1CH home sound system to hook 2...
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Overseas warehouse shipping 3-5 days, China warehouse shipping 7-15 days.
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  • Fosi Audio T3 is a Hi-Fi Bluetooth 5.0 stereo tube amplifier that offers a warm and natural sound quality, superb audio fidelity, and efficiency. You can build a 2.1CH home sound system to hook 2 passive speakers+1 powered subwoofer through T3 to get hifi music enjoyment.
  • Tube Headphone Amplifier. T3 can drive most headphones to deliver a colossal sound stage and effortless dynamic range. Clearer sound performance in all audio ranges - base, mid-range, and treble.
  • Exclusive Design. T3 features Bluetooth/RCA input, volume/bass/treble control, passive speakers/active subwoofer/headphone output, ease to set up, and fits most home stereo systems.
  • Real audiophile sound. T3 is equipped with 6F2 tubes to get warmth sound and with class D efficiency. A better listening experience from your speakers and headphones./li>
  • What you Get: T3 amplifier x1, Bluetooth antenna x1, 6F2 Vacuum tubes x2, Power Cable x1, User Manual x1, 24-month worry-free warranty, and friendly customer service.
Fosi Audio T3 Hybrid Stereo Tube Amplifier
Fosi Audio T3 Hybrid Stereo Tube Amplifier


Specifications Details
Model T3
RMS Output Power 50W x2@4Ω
Headphones Output 16-300Ohm
Terminating Impedance 4Ω-8Ω
Input Mode Bluetooth, AUX1, AUX2
Output Mode Passive Speakers, Active Subwoofer, Headphone
Frequency Range 45Hz-20KHz
THD 0.1%
SNR ≥ 86dB
Input Sensitivity 300mV
Bluetooth Transmission Distance Up to 28 Ft(10m)
Bluetooth Name Fosi Audio T3
Device Dimension 230 x 150 x 70mm
Work Voltage AC 110V - 240V

What‘s in the box?

Item Quantity
Fosi Audio T3 Amplifier x 1
Bluetooth Antenna x 1
ECF80 Vacuum tubes x 2
Power Cable x 1
User’s Manual x 1

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 6 reviews
Beyond all Expectations - even Bluetooth performance

I bought this for my computer desktop system, to replace a 32-year old 5.1 Pioneer AV receiver that I kept on a shelf under the desktop. I had to push my chair back, slide the keyboard tray in, and bend down with a flashlight whenever I wanted to switch inputs or change surround settings, etc., especially with the room darkened. Not only was it very bulky and inconvenient to operate, but it was a real pain to pull-out to change rear-panel connections. I paid over three times the price of the new Fosi amp for that Pioneer receiver way back in 1991 - talk about a real bargain in these inflationary times! I never used rear or center channel speakers when using the Pioneer as a desktop amp, and never came close to using the 100W per channel output. I will move the old receiver to TV room to upgrade a cheap off-brand AV system, using a pair of Klipsch SB-2 bookshelf speakers that have been sitting idle in storage for a decade.

The new T3 sits on my desktop right between 42" monitor and a USB DAC/pre-amp, where it is easy to reach and adjust the controls, without having to push my chair back and bend down with flashlight. It is absolutely gorgeous and I love the illuminated tubes glowing in the dark. The sound quality is first-rate for multiple times the price, and the line-out subwoofer jack connects to my Klipsch R-100SW active 10" sub to seamlessly augment the bottom-end from a pair of Klipsch RB-10 satellites with 4" woofer cones. It delivers a stunning stereo image, with no hiss, hum or other audio detritus. With only 25W RMS per channel, it can still drive the very sensitive Klipsch speakers to insane sound levels, without appreciable distortion. I keep the amp's tone controls flat, and use the VLC media player's equalizer to shape the sound spectrum, as well as control volume levels.

I ordered a matched pair of low-noise GE JAN-5725W tubes ($22 Cdn) a couple days before the amp arrived, which are allegedly a sonic upgrade to the stock Chinese 6J2 preamp tubes (the output stage is solid state). I will update this review when they arrive, if the GE NOS tubes result in any further improvement to the stereo soundstage or frequency response. I have seen some very negative reviews of this little amp online and on YouTube, but they seem to be completely baseless based on my unit. I do have the amp plugged into a YY Audio power filter/conditioner, so the lack of hum or hiss is no surprise.

I would highly recommend this little black beauty to anyone who wants a small, simple amp to drive a pair of bookshelf speakers (with or without sub) for nearfield listening, or in a smallish room. It won't push big, power-hungry tower speakers to ear-bleeding levels, but I would bet it would work fine for jazz or chamber music with sensitive, large speakers (like every Klipsch model ever), in anything but a huge listening room.

Right after I received this amp from Amazon (Canada), it disappeared from the site - likely sold out. Get yours while you can

Michael Keza
Terrific amp.

I love this little amp!
Excellent sound, tone controls work well and easy to set up and use with good connection options. I've used it with several different speaker brands and no issues driving even relatively low impedance speakers. My only wish is that it came with a remote, though that is a small issue given the value for price. I'd love to see Fosi Audio make more affordable AB amps.

Ben Herrmann
While it lasts, absolutely superb sound - but dies soon after

I first purchased this amp back in October 2022 and I was one of the first to proclaim that its sound was state-of-the-art. Now to be honest, I kept mine on a desktop, near-field environment, so the power ratings didn't matter much to me, because I would never use more than just a few watts of power.

All I knew was the fact that it produced such a lovely, Audiophile-level sound quality. I wrote many a positive review on it on various sites because I couldn't believe that such an inexpensive amp could produce such superb sound. I consistently gave it 5 stars - but that has change.

But alas, this did not last long. At the end of April of 2023 (just 7 months after purchase), the amplifier started to have huge drop-outs in the music. The drop-outs would last for 1-2 seconds at a time and if you turned up the volume a little (which on a desktop scenario wasn't much), the drop-outs would get longer - I was so surprised and disappointed. I tried troubleshooting by changing tubes, checking my other components, all to no avail - it was the T3 that was at fault.

I tried contacting Fosi to see what I could do, but there was no answer - very disappointing also.

So now I have an amp that I cannot use. I don't know if I will purchase a new T3 because I am afraid the long-term reliability is just not there.

So I am giving this formerly wonderful amp just 3 stars due to poor reliability and the inability to get it repaired or replaced.

Oh well - such is life. I will look elsewhere for a tube amplifier to replace this T3.

Ben Herrmann
Fuquay-Varina, NC USA

Lalo Rosales
Terrific little amp

Pictures of analog setup.Replacing a 70s Marantz receiver with surprisingly good results.

Lalo Rosales
Terrific little amp.

I am a person that has never left the analog realm and have had countless receivers, integrated amps and experienced tube amps from the 50s 60s and 70s.I am coming from a '72 Marantz 2245 receiver which I used FM for classical music (I'm in SoCal so good reception) and play vinyl and shellac (78rpn) both stereo and mono loud. I am transitioning to D type amps to check them out to compare and the T3 looks to be the perfect transition from my former analog setup. It has inputs for 2 different devices. It's hooked up to a Scott tuner and a Audio technica turntable with preamp with good results driving 70s Sansui 4 way speakers. It could use a little more headroom but generally adequate for a mid size living space.The only review I could find was a bad one on YouTube didn't describe specifics like this review. I'm impressed with the ability to drive the described speaker and handle this tuner with the quietness that it displayed. I can't tell you about the Bluetooth as I am a analog audio person but probably works fine. For the $$ the T3 is terrific.

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