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

Price: $129.99 - $103.99
(as of Nov 26, 2025 15:17:06 UTC – Details)

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. Bluetooth 4.0 Ch Amplifier for Outdoor Speakers Merchant Video

Designed for Multi-Speaker Scenarios

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

Input: 3.5mm AUX, Optical, BluetoothOutput: 3.5mm Pre-Out, Passive Speakers+SubwooferRated Power Output: 4.1 Channel: 30w*4+60W*1 @4Ω; 5.0 Channel: 30W*5Max Power Output: 50Wx5 @4Ω

1 Bars and Pubs

2 Home Audio

3 Yards and Gardens

4 Family Gatherings

5 Coffee Audio

Max Output Power 50W*5

Providing sufficient power output and ensuring pure sound with great clarity and separation.

Integrated Functions of Infinite Rotation

Long press to power the device on/off, short press to switch input modes and volume adjustment.

For Flexible Multi-Channel System

Adaptable to 5.0 or 4.1 channel audio setups indoors or outdoors.

Customize Your Favorite Sound Signature

Allowing you to effortlessly restore the original sound when adjusted to the center position.

1 Dual TPA3116

2 Multi-Functional Knob

3 Multiple Outputs

4 Tone Controls

1 Front Panel

2 Rear Panel

User-Friendly Design 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.

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.

Multi-Functional Remote

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

Full-Aluminum Alloy Chassis

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

NOTES:

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.The HT4S does not support automatic power on/off and requires manual operation or the use of the remote control to switch on/off.The HT4S only provides a 3.5mm AUX input interface and does not include RCA jacks.The HT4S is a stereo amplifier and does not support Dolby, DTS, or other multichannel surround sound modes.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.

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