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  • 2 VIDEOS
Fosi Audio HT4S 4 channel ampFosiAudioDirect
  • Fosi Audio HT4S Bluetooth Amplifier for Outdoor Speakers, 4 Channel Power Amp for Home Theater, Outdoor Gathering, 4.1/5.0 Ch Stereo Home Audio Receiver, Supports AUX/Optical Input with Remote Control
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Fosi Audio HT4S Bluetooth Amplifier for Outdoor Speakers, 4 Channel Power Amp for Home Theater, Outdoor Gathering, 4.1/5.0 Ch Stereo Home Audio Receiver, Supports AUX/Optical Input with Remote Control

4.0 out of 5 stars 18 ratings
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Purchase options and add-ons

  • All-in-One Amp: A mini amplifier that integrates DAC and power amplification. This stereo amplifier supports up to 5 channels output, switchable between 4.1 and 5.0 channels. It features Bluetooth, AUX, and optical digital inputs, along with pre-out and support for up to 5 speaker outputs. Note: The HT4S is a stereo amplifier and does not support Dolby, DTS, or other multichannel surround sound modes
  • Multi-Scenario Solution: Ideal for pairing with outdoor speakers or wall-mounted speakers, perfect for setting up 2 to 5-channel audio systems in environments like patios, cafes, restaurants, bars, etc. It can also serve as a home theater or desktop HiFi system amplifier, meeting your diverse needs from indoor to outdoor settings
  • Enhanced Immersion: Take your sim racing and home theater experience to a whole new level! By pairing with bass shakers, its sufficient power output and bass boost help significantly enhance the realism of racing simulator games. When watching movies at home, the vibration feedback can also help you experience your movies in another dimension, making every movie feel more realistic like being in a cinema
  • Effortless Operation: Featuring a comprehensive user-friendly design with a built-in power supply, accompanied by remote control, supporting bass and treble tone adjustment, a multifunctional central knob for volume control, powering on/off and mode switching, LED mode indicator ambient light, etc. Enjoying music has never been easier
  • Elegant and Durable: Continuing Fosi Audio's tradition of an all-aluminum alloy body design, the CNC unibody construction and fine metal sandblasting process highlight a minimalist aesthetic
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Product information

Technical Details

Brand ‎Fosi Audio
Manufacturer ‎Shenzhen Foresight Technology Co., Ltd.
Place of Business ‎3rd Floor, Building 10, Aohua Industrial Zone, Gaofeng Community, Dalang Street, Longhua District, Shenzhen 518000 China
Model ‎HT4S
Mounting Hardware ‎Fosi Audio HT4S; Power Cord; Bluetooth Antenna; 3.5mm Aux Cable; Remote Control;User Manual
Number of Items ‎1
Batteries Required ‎No
Manufacturer ‎Shenzhen Foresight Technology Co., Ltd.
Item model number ‎HT4S
Product Dimensions ‎18.29 x 15.49 x 5.08 cm; 1.58 kg
ASIN ‎B0DR1LZ3QF

Additional Information

Date First Available April 6 2025
Customer Reviews
4.0 out of 5 stars 18 ratings

4.0 out of 5 stars
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Fosi Audio HT4S Bluetooth Amplifier for Outdoor Speakers, 4 Channel Power Amp for Home Theater, Outdoor Gathering, 4.1/5.0 Ch Stereo Home Audio Receiver, Supports AUX/Optical Input with Remote Control

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  3. Sustainability features

    This product has sustainability features recognized by trusted certifications.
    Carbon impact
    Carbon emissions from the lifecycle of this product were measured, reduced and offset.
    As certified by
    ClimatePartner certified

    ClimatePartner certified

    The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reducing emissions.

    Certification Number

    ZK5TB8

    Climate Pledge Friendly

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  2. Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.

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Product Description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

HT4S Bluetooth Amplifier

Merchant video
HT4S

Designed for Multi-Speaker Scenarios and Sim Racing Gaming

The built-in power supply design achieves minimal footprint, and the front panel indicator light adds a sense of atmosphere; whether it is simulator racing, patio parties, or immersive movie watching, The HT4S integrated amplifier is your ideal choice.

  • Input: 3.5mm AUX, Optical, Bluetooth
  • Output: 3.5mm Pre-Out, Passive Speakers+Subwoofer
  • Rated Power Output: 4.1 Channel: 30w*4+60W*1 @4¦¸; 5.0 Channel: 30W*5
  • Max Power Output: 50Wx5 @4¦¸

ht4s

SUB/CEN Channel Mode Switch

In FLAT mode, the SUB/CEN channel outputs full-range audio signals, while in SUB mode, it outputs low-frequency signals from 20 to 300Hz.

Fosi Audio HT4S Bluetooth Amplifier

Ambient Light Strip

Input modes are color-coded for easy use: blue for Bluetooth, orange for AUX, and red for OPT, to enhance the intuitiveness of operation.

Fosi Audio HT4S Bluetooth Amplifier

Multi-Functional Remote

Provides functions like device power on/off, input mode switching, one-touch mute, etc., offering greater convenience.

Fosi Audio HT4S Bluetooth Amplifier

Full-Aluminum Alloy Chassis

Constructed with a full metal casing, CNC machined, finely sandblasted for a simple yet durable and rugged design.

  1. Please confirm whether this product is compatible with your devices before purchasing and select an appropriate amplifier based on your speaker power to avoid insufficient power or volume.
  2. The HT4S does not support automatic power on/off and requires manual operation or the use of the remote control to switch on/off.
  3. The HT4S only provides a 3.5mm AUX input interface and does not include RCA jacks.
  4. The HT4S is a stereo amplifier and does not support Dolby, DTS, or other multichannel surround sound modes.
  5. To avoid interference with the television, do not point the infrared signal of this product's remote control directly at the television's infrared receiver.

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