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Fosi Audio T20 Tube Amplifier | Bluetooth 5.0 Hi-Fi Stereo Amp for Home Speakers

Fosi Audio T20 Tube Amplifier | Bluetooth 5.0 Hi-Fi Stereo Amp for Home Speakers

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1. Elegant Fusion of Retro Soul and Modern Power The Fosi Audio T20 is not just an amplifier; it’s a... Read more

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$89.90 Excl. VAT

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    Description

    1. Elegant Fusion of Retro Soul and Modern Power

    The Fosi Audio T20 is not just an amplifier; it’s a bridge between the golden age of analog audio and today’s wireless convenience. By combining authentic vacuum tubes with high-efficiency Class D amplification, the T20 delivers that sought-after "warm" sound while maintaining the punch and clarity needed for modern music.

    2. Key Features & Audiophile Tech

    Authentic Vacuum Tube Warmth

    • Classic 6K4 Tubes: The T20 uses two replaceable 6K4 vacuum tubes to soften digital harshness. This results in a liquid-smooth midrange and sweet, non-fatiguing highs—ideal for long listening sessions.

    • Tube Rolling Fun: For enthusiasts, the tubes are replaceable with 6J1, 6J4, GE5654, or 6AK5 models, allowing you to "roll" tubes and customize your sound signature.

    Advanced Wireless & Wired Connectivity

    • Bluetooth 5.0 Streaming: Enjoy high-fidelity wireless music from your phone or laptop. With an external high-gain antenna, the T20 ensures a stable connection up to 50ft (15m) with ultra-low latency.

    • RCA Input: Connect your turntable (with preamp), CD player, or PC via the standard RCA inputs for a pure wired experience.

    Superior Driving Power & Versatility

    • 50W x2 Output: Powered by the TPA3116 chip, the T20 effortlessly drives most home passive speakers (4-8 ohm), producing a soundstage that defies its compact size.

    • Built-in Headphone Amp: Features a dedicated 3.5mm headphone output, allowing you to enjoy the tube-amplified warmth through your favorite headphones without disturbing others.

    3. Technical Specifications

    Component Specification
    Power Max Output 50W x2 @4Ω
    Vacuum Tubes 6K4 (Replaceable)
    Input Mode Bluetooth 5.0 + RCA
    Output Mode Passive Speakers + 3.5mm Headphone
    THD / SNR ≤ 0.04% / ≥ 99dB
    Frequency Range 20Hz - 20kHz (±1.5dB)

    4. Why the Fosi Audio T20 is a Desktop Essential

    The T20 solves the biggest problem with modern digital audio: the "cold" and "flat" sound. Its Bass and Treble tone controls give you the power to sculpt your audio, while its premium aluminum chassis provides excellent heat dissipation and interference shielding. It’s the ultimate upgrade for any bookshelf speaker setup.

    Specifications

    • Weight: 200gr
    • Usage: Indoor & outdoor

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use
    • May discolor in direct sunlight

    • Product details

      - CC3031 wireless Bluetooth 5.0 core support aptX and aptX-HD, Streaming range up to 39ft(12m), With Bluetooth and AUX selector, no pop when Bluetooth connecting;

      - 50W RMS X 2 power output(4 ohms, 20 Hz - 20 kHz, 0.04% THD), built-in speakers protection circuit, best for outdoor/ bookshelf/ computer/ desktop /ceiling /floor standing speakers, can use iPod, Phone, MP3 players, TV, Echo Dot, CD players, or Streaming Media players as input;

      - Adopt 2 x 6A2 tubes to get clear audio sound, tubes can be replaced by JAN 5654W, 6K4, 6J1, GE5654, 6AK5, 6ж1П, 6BC5, 403A/B, EF40, EF95 and so on, with a headphone output for 16-64ohm headphones;

      - Small simple compact design but practical and powerful, Hi-Fi Bluetooth amplifier receiver exclusively designed for the customers who pursue HiFi sound;

      - Power amp + Headphone amp, perfectly suited for your desktop or a smaller space in your home or office, digital amplifier is easy to connect to your audio system with no software to install or settings to change.

    • TUBE BLUETOOTH AMPLIFIERHEADPHONE AMP
      • Fosi_Audio_T20 scene diagram

        Specifications

        Model
        T20
        Chip Set
        Chip Set
        Chip Set
        50W x 2
        Headphones Output
        16-64Ohm
        Terminating Impedance
        2Ω-8Ω
        Input Mode
        Bluetooth + RCA
        Output Mode
        Output Mode
        Frequency Range
        Frequency Range
        THD
        THD
        SNR
        ≥ 99dB
        Input Sensitivity
        Input Sensitivity
        Bluetooth Transmission Distance
        QCC3031
        Bluetooth Version
        Bluetooth 5.0 support aptX and aptX-HD
        Bluetooth 5.0 support aptX and aptX-HD
        5.06 x 3.86 x 1.35 inches
        DC Input Range
        12-24V
        Power Supply
        24V 4.5A

        What‘s in the box？

        Fosi Audio T20 Amplifier
        1
        Bluetooth Antenna
        1
        6A2 Vaccum Tube
        2
        24V 4.5A Power Adapter
        1
        User’s Manual
        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 are the differences in power outputs using the 32V and 48V power supplies?
        • Using a more powerful power supply can help prevent distortion.
        • Enables amplifier to drive larger, more powerful, or higher-impedance speakers.
        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.

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