Fosi Audio HT4S Bluetooth Amplifier for Outdoor Speakers, 4 Channel Power Amp for Bass Shaker with Remote Control

Regular price
$119.99 USD
Sale price
$119.99 USD
Regular price
$119.99 USD
Tax included. Shipping calculated at checkout.
20% Off on Valentine's Day
CODE: FSVD20

Customize Your Favorite Sound Signature

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

For Flexible Multi-Channel System

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

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 @4Ω; 5.0 Channel: 30W*5
Max Power Output: 50Wx5 @4Ω

Enhance the Realism of Racing Simulator Gaming

Providing strong vibrations to add a new level of immersion to your gameplay.

Supports Connection to Up to 5 Bass Shakers

Allowing you to experience a 360° immersive sensation in the world of racing games.

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.

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.

Amplifier Comparison Table

BT20A PRO

HT4S

V3

Type

Bluetooth 2.0 CH Amp

Bluetooth 4.1 CH Amp

2.0 CH Amp

MAX Power Output

300W x 2

30w*4+60W*1

300W x 2

Input

Bluetooth + RCA

BT + 3.5mm AUX + OPT

RCA

Output

Passive SPK +Pre-out

Pre-Out+SPK Out

Passive SPK +Pre-out

Treble&Bass Control

THD

≤ 0.005%

≤ 0.03%

<0.003%

SNR

≥108dB

≥88dB

≥110dB

Learn More

  • 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.

  • 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. The full metal body ensures durability, and you can enjoy Fosi Audio's 24-month guarantee for every unit.
  • Note: The HT4S is a stereo amplifier and does not support Dolby, DTS, or other multichannel surround sound modes
  • Channel : Bluetooth 4.1 CH Amp
  • Input : Bluetooth + 3.5mm AUX + OPT
  • Output : 3.5mm Pre-Out + Speaker Out
  • SNR : ≥88dB
  • THD : ≤ 0.03%
  • Terminal Impedance : 4-8Ω 
  • Rated Power Output : 30w*4+60W*1
  • MAX Power Output : 50Wx5 @4Ω
  • Work Voltage: AC 110V - 240V 
  • Product Dimensions : 6.1 x 7.2 x 2 inches
  • HT4S*1
  • Power Cord*1
  • Bluetooth Antenna*1
  • 3.5mm Auxiliary Cable*1
  • Remote Control*1
  • HT4S User Manual*1

Customer Reviews

Based on 7 reviews
14%
(1)
43%
(3)
14%
(1)
0%
(0)
29%
(2)
B
Brian D.
Nice Little System!

I hooked this up to the 4 Advent speakers that I have hooked up in my office. Sounds great - lots of power! I don't have a sub-woofer installed so can't comment on that. The only reason I gave it a 4 instead of a 5 is that it was a bit challenging to connect my speaker wires. I have 16 ga. monster cable and there is limited space to connect the wires and the holes are small. I basically had to re-cut and twist each wire so that it would fit in the hole. The connector holes are not as large as a typical receiver. Sounds Awesome though!

A
Alan Rothenbush
Construction is pretty good but the specs are laughable.

This is a nice looking piece. And the construction seems to be very good; it mostly feels like a quality piece. (One exception is the the volume control, which I use all the time; it's very wobbly, probably because it also pushes on a switch.)

But 30 watts per channel? Ridiculous. Best guess, this is a 1 watt amplifier. Maybe.

I replaced a 20 watt per channel amp with this Fosi. The old amp at 1 on the volume control is much much much louder than the Fosi at full volume.

This is a 1 watt amp, maybe less.

A
Anup Ravi
HT4S from my POV

- Pros :
Top notch Build Quality
Easy to setup and use
Connectivity options are good
Stereo amplifier
-Cons :
Feels expensive
No dolby support
Every time need to turn on the device manually

L
Luis Paulino
False advertising

These equipment is no for SIM Racing bass shaker because it only receives two channels inputs and your false advertisement is showing 5 channels. I am requesting my money back through paypal.

P
Peter Schneider
Very neat compact and clean amp, easy to use

For my specific application, the HT4S is the ideal solution: It replaces an older analog Home Theater 5.1 setup with an active subwoofer which was always used in dual stereo mode (rear speakers duplicating the front speaker signal). The HT4S saves a lot of space and is much easier to use than the old amp with dozens of unused connectors and buttons. The color indicator bar is easy to grasp, and the remote control has all the necessary functions. I just would have preferred cinch connectors instead of the 3.5mm jacks for the analog ports. The manual and the description could be a bit clearer about the limitations (no "true" surround sound), and how exactly you should set up an active subwoofer to avoid trial and error.