Fosi Audio T20X
- 2 reviews
- Fosi Audio
Fosi Audio T20X
- 2 reviews
- Fosi Audio
$75.06
- Authorized Dealer · Tech Support · 30-Day Returns
Why it stands out
Best for
Not ideal for
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Setup guide
How to connect
What you should know
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Frequently asked questions
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Official product information provided by Fosi Audio
The following product descriptions, specifications and images are provided by the manufacturer.
Fosi Audio T20X is a Bluetooth vacuum-tube integrated amplifier for passive speakers and wired headphones.
Its upgraded 100W x2 output, replaceable tubes and bass/treble controls create a compact all-in-one amplifier for desktop and bookshelf systems.
Why it stands out
Four reasons this product deserves a place in a well-planned audio system.
100W x2 Maximum Output
The Class D power stage provides more headroom than the T20 for compatible passive speakers.
Replaceable Tube Stage
Tube rolling lets experienced users experiment with compatible tube options.
Two Listening Outputs
Drive passive speakers or use the 3.5mm headphone connection from the same amplifier.
Simple Wireless and Analog Playback
Bluetooth and analog input cover the most common phone, streamer and DAC setups without a complex interface.
Best for
- Bookshelf passive-speaker systems
- Bluetooth desktop audio
- Combined speaker and headphone listening
- Listeners wanting tube character with higher output than the T20
Not ideal for
- Users requiring optical, USB or HDMI audio
- Balanced XLR systems
- Turntables without phono amplification
- Systems needing a dedicated subwoofer output
EMiUZEK Buying Notes
- T20X is an integrated amplifier and can directly drive compatible 2–8Ω passive speakers.
- Its analog input is line level; use a phono preamp with a conventional turntable.
- The maximum output figure depends on speaker impedance, supply voltage and test conditions.
Frequently Asked Questions
Can the T20X drive passive speakers?
Yes. It is an integrated amplifier with passive-speaker outputs.
Can it connect to a turntable?
Yes when the turntable has a built-in phono preamp or an external phono preamp is used.
Does it include a headphone output?
Yes, a 3.5mm wired headphone output is provided.
Does it support optical or USB audio?
No. Use Bluetooth or the analog input.
Can the vacuum tubes be replaced?
Yes. Use compatible tubes and switch the amplifier off before tube replacement.
Can I connect an active subwoofer?
No dedicated subwoofer output is specified; use a compatible system-level integration method.
HOW TO CONNECT
Bluetooth stereo
Source: Phone / tablet
Connection: Bluetooth
Output: Speaker terminals
Target: Passive speakers
Note: Keep initial volume low when pairing.
Wired HiFi
Source: Streamer / DAC / CD player
Connection: Analog line input
Output: Speaker terminals
Target: Passive speakers
Note: Use a line-level source.
Headphone system
Source: Bluetooth or analog source
Connection: Bluetooth / line input
Output: 3.5mm headphone output
Target: Wired headphones
Note: Disconnect or lower speaker listening as appropriate.
Technical Specifications
Amplifier
| Feature | Specification |
|---|---|
| Product Type | Bluetooth tube integrated amplifier |
| Amplifier Chip | TI TPA3221 |
| Maximum Output | 100W x2 at 4Ω |
| Speaker Impedance | 2–8Ω |
Audio
| Feature | Specification |
|---|---|
| Frequency Response | 20Hz–20kHz (±1dB) |
| THD | ≤0.3% |
| SNR | ≥86dB |
| Input Sensitivity | ≤650mV |
Connectivity and Power
| Feature | Specification |
|---|---|
| Inputs | Bluetooth; analog line input |
| Outputs | Passive speaker terminals; 3.5mm headphone |
| Power Supply | 24V/4.5A included |
| DC Input Range | 12–30V |
Recommended System Setup
| Setup | Connection |
|---|---|
| Wireless speaker system | Phone → Bluetooth → T20X → passive speakers |
| Wired stereo | Streamer/DAC → line input → T20X → passive speakers |
| Headphones | Source → T20X → 3.5mm headphones |
Additional Product Content
| Feature | T20X | T20 | P3 |
|---|---|---|---|
| Product Position | Higher-power tube integrated amp | Compact tube integrated amp | Tube preamp / headphone amp |
| Passive Speaker Amplifier | Yes | Yes | No |
| Maximum Speaker Output | 100W x2 at 4Ω | 50W x2 at 4Ω | Not applicable |
| Inputs | Bluetooth, line input | Bluetooth 5.0, RCA | Bluetooth, RCA |
| Headphone Output | 3.5mm | 3.5mm | 3.5mm |
| Tone Controls | Bass, treble | Bass, treble | Bass, treble |
| Tube Rolling | Compatible tubes | Compatible tubes | Compatible tubes |
| Best Use | More speaker headroom | Compact speaker system | Existing amplifier / active speakers |
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Please contact EMIUZEK before returning any product so we can provide assistance.
