Shipped today?
Order within:
Jan 15, 2026 23:59:00 +0800
Free shipping on all orders above 50,00
No hassle returns, 30 days return
Pay whenever you want
Easily pay within 30 days after you have received your package. Read more
Pairs well with
Description
1. The Perfect Blend of Vintage Warmth and Modern Tech
The Fosi Audio T20X is an upgraded Bluetooth vacuum tube amplifier designed for listeners who crave the soulful, harmonic richness of analog sound without sacrificing modern convenience. Combining high-efficiency Class D amplification with the natural warmth of vacuum tubes, the T20X serves as the versatile heart of any desktop or bookshelf Hi-Fi system.
2. Key Features & Technologies
Authentic Tube Sound Aesthetics
Replaceable Vacuum Tubes: Equipped with high-quality 6K4 tubes (compatible with 6J1, 6J4, GE5654, etc.), the T20X filters digital harshness to deliver a smooth, liquid mid-range and sweet treble.
Tone Customization: Independent Bass and Treble controls allow you to fine-tune the sound profile to match your speakers' characteristics or your personal listening preference.
High-Performance Hybrid Power
100W RMS Output: Despite its compact size, the T20X pumps out 50W x2 (4 ohms), effortlessly driving most passive bookshelf and floor-standing speakers with clarity and punch.
Bluetooth 5.0 Connectivity: Features a high-gain external antenna for stable, low-latency wireless streaming up to 50ft, supporting effortless pairing with smartphones, tablets, and laptops.
Integrated Headphone Amplifier
Versatile Listening: Unlike standard power amps, the T20X features a dedicated 3.5mm headphone output. The tube pre-amplification stage applies to the headphone jack as well, providing a warm, "analog" listening experience for your favorite cans.
Subwoofer Output: Includes a dedicated 3.5mm full-frequency/low-pass output, making it easy to build a powerful 2.1 channel system.
3. Technical Specifications
Component
Specification
Power Output
50W x2 @4Ω
Terminating Impedance
2Ω - 8Ω
Tubes
6K4 (Replaceable with 6J1, GE5654, etc.)
Inputs
Bluetooth 5.0, RCA Unbalanced
Outputs
Speaker Out, 3.5mm Headphone Out, Subwoofer Out
SNR / THD
≥ 99dB / ≤ 0.04%
Power Supply
24V/4.5A
4. Elevate Your Desktop Audio Experience
The Fosi Audio T20X is built for those who appreciate the tactile beauty of audio gear. Its compact aluminum chassis and glowing vacuum tubes make it a visual centerpiece for any workspace. Whether you are rediscovering your vinyl collection via the RCA input or streaming high-res playlists via Bluetooth, the T20X provides a fatigue-free, immersive musical journey.
Specifications
Weight:
200gr
Usage:
Indoor & outdoor
Pros and cons
Sustainably produced
Ideal for everyday use
May discolor in direct sunlight
Productdetails
2-in-1: Hifi Music Tube Bluetooth 5.0 Home Audio Receiver 2 Channel Amplifier and Headphone Amp. T20X can drive most home passive/desktop speakers and 3.5MM headphones. Achieve Hifi music quality.
Bluetooth 5.0: Enjoy superior wireless audio experiences with Bluetooth 5.0 core. Faster transmission and more stable connection extended long range up to 50ft/15m. Wirelessly stream audio anywhere you want.
Vacuum Tubes: T20X is equipped with JAN 5654W Vacuum Tubes to get more warm sound. Applicable vacuum tubes model: 6K4/6J1/6A2/6J4/GE5654/6AK5/66*In vacuum tubes, etc. You can replace the vacuum tubes to DIY your stereo system. Different tube with different sound.
Product Parameters: MAX Power Output: 100W x2@4Ω, Terminating Impedance: 4-8Ω, THD: ≤0.05%, SNR: ≥ 105dB, Amplifier Chip: TPA3221, Frequency Range: 20Hz-20kHz(±1dB).
What you Get: T20X amplifier x1, Bluetooth antenna x1, 5654W Vacuum tubes x2, User Manual x1, 24V/4.5A Power Adapter x1, AC Cord x1, 24-month worry-free warranty, and friendly customer service.
Stream Hi-Fi music to your stereo system to separate passive speakers and preamps for your audio setup. 100 watt per channel power output can drive most home passive speakers to create unbelievable sound. Easy to fit your audio system with Bluetooth and RCA input.
TPA3221 is a high-power Class-D amplifier that enables efficient operation at full power, idle, and standby. The device features closed-loop feedback with a bandwidth up to 100 kHz, which provides low distortion across the audio band and delivers excellent sound quality.
The 5654W tube has a warm sound and the bass is present. Applicable vacuum tube model: EF95, 6AK5, 6AK5W, 403A/403B, 6J1, 6J1P, 6J2, 6J3, 6J4, 6J5 vacuum tubes,etc. You can replace the vacuum tubes to DIY your stereo system.
Treble and Bass independent gain rotation design, sound quality is under control, adding more playability and fun for music, more ways to play and wait for you to discover.
Bluetooth 5.0 chip ensures your devices maintain a strong, stable connection up to 50 Ft away, and you can enjoy the experiences that have fun, relax and socialize, with no disruption in sound quality.
Strong output power: each channel can output 100W(4Ω) and easily drive 4-8Ω passive speakers to build a multiple channel system and enjoy a wonderful home theater experience..
Selections
Type:DAC+Headphone Amp
MAX Power Output:Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers.
Input:USB-C + Optical + Coaxial+3.5mm Microphone
Output:RCA + 3.5mm Headphone
Treble & Bass Control:Yes
THD:<0.003%
SNR:>110dB
Terminating Impedance:16-300 Ohm
Power Adapter:/
Type:DAC+Headphone Amp
MAX Power Output:Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers.