







Fosi Audio T3 Bluetooth Hybrid Stereo Tube Amp
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Fosi Audio T3 Bluetooth Hybrid Stereo Tube Amp
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
- 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.


Specifications
| 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 |
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.

