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    Fosi Audio V3 300W x2 2.0 Channel Hi-Fi Stereo Audio Amplifier with TPA3255 Chip

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    TPA3255|300watts x2@4Ω|Hi-End Capacitors & Inductor


    1. Innovative Case Cooling System

    2. Replaceable Op-Amp Chips: SS3602, MUSES02, OPA2604AP, OPA2134PA

    3. Speaker Output + Pre-out  

    4. Logarithmic Taper A Pot

    5. Replaceable Knobs: ORANGE KNOB

    Fosi Audio BT20A PRO 300W x2 TPA3255 2 Channel Bluetooth 5.0 Power Amplifier

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    TPA3255|300watts x2@4Ω|Mini Hi-Fi Class D


    1. Bass & Treble Control with Midpoint Positioning  

    2. Op-Amp Rolling: SS3602, MUSES02, OPA2604AP, OPA2134PA

    3. Passive Speakers + Pre-out   

    4. Bluetooth Pairing Cleared

    5. Replaceable Knobs: ORANGE KNOB, GREY KNOB

    Fosi Audio SK01 Headphone Amplifier & Preamplifier

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    Get $8 Off with Code: SK018
    Versatile Audio Gear|Headphone Amp |Pre-Amplifier |Equalizer


    1. Tri-Band Tone Control

    2. By a Button Defeat Tone

    3. Single-Ended 3.5mm & 6.35mm Supported 

    4. Bass & Treble Control with Midpoint Positioning  

    5. Incorporates High & Low Two Gain Levels 

    Fosi Audio BT30D PRO 165Wx2 +350W TPA3255 2.1 CH Bluetooth 5.0 Power Amplifier for Speaker Subwoofer

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    2PCS TPA3255|165W x2+350W@4Ω|2.1 Channel Mini Class D


    1. High-Performance Amplifier  

    2. 3.5MM Full-Range Output  

    3. Connect Passive/Powered Speakers, Passive/Powered Subwoofers  

    4. Supports SUB frequency, SUB Volume, Master Volume/Bass/Treble Control

    5. Replaceable Knobs: ORANGE KNOB

    Fosi Audio K5 Pro Gaming DAC Headphone Amplifier Mini Hi-Fi Stereo for PS5/PC/MAC/Smartphone

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    DAC Headphone Amp Combo|TI NE5532


    1. Microphone Function

    2. Versatile Connectivity

    3. 16-300 Ω Powerful Headphone Drive

    4. Bass & Treble Adjustment

    5. 2-in-1 USB Type C

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

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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...

    [Upgraded Version] Fosi Audio TB10D TPA3255 Power Amplifier 300Wx2 HiFi Digital Stereo Audio Amp 2.0 Channel Amplifier with Bass and Treble Control

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    TPA3255|300watts x2@4Ω|HI-FI Class-D


    1. Compatible with Most Audio Equipment

    2. Treble & Bass Control

    3. Passive Speakers

    4. Replaceable Knobs:  ORANGE KNOB

    Fosi Audio T20X Bluetooth 5.0 Tube Amplifier Headphone Amp Stereo Audio Receiver 2 Channel Digital Mini Hi-Fi Integrated Power Amp for Passive Speakers

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    2-in-1 Tube Bluetooth 5.0 Home Audio Receiver Amplifier and Headphone Amp. T20X can drive most home passive/desktop speakers and 3.5MM headphones. Achieve Hifi music quality. Enjoy superior wireless audio experiences...

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