--- product_id: 671682535 title: "– HT4S Bluetooth Amplifier for Outdoor Speakers, Bass Shaker Sim 4-Channel Power Amp for Racing Cockpit 4.1/5.0 Ch Stereo Home Audio Receiver with AUX/Optical Input Remote Control" brand: "fosi audio" price: "€ 320.12" currency: EUR in_stock: true reviews_count: 6 url: https://www.desertcart.gr/products/671682535-ht4s-bluetooth-amplifier-for-outdoor-speakers-bass-shaker-sim-4 store_origin: GR region: Greece --- # Bass shaker support for immersive gaming 50W max power output Bluetooth + AUX + Optical inputs – HT4S Bluetooth Amplifier for Outdoor Speakers, Bass Shaker Sim 4-Channel Power Amp for Racing Cockpit 4.1/5.0 Ch Stereo Home Audio Receiver with AUX/Optical Input Remote Control **Brand:** fosi audio **Price:** € 320.12 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your soundscape — from patio vibes to racing thrills! ## Quick Answers - **What is this?** – HT4S Bluetooth Amplifier for Outdoor Speakers, Bass Shaker Sim 4-Channel Power Amp for Racing Cockpit 4.1/5.0 Ch Stereo Home Audio Receiver with AUX/Optical Input Remote Control by fosi audio - **How much does it cost?** € 320.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/671682535-ht4s-bluetooth-amplifier-for-outdoor-speakers-bass-shaker-sim-4) ## Best For - fosi audio enthusiasts ## Why This Product - Trusted fosi audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable All-Metal Design:** CNC-machined aluminum body combines sleek minimalism with rugged durability and a 24-month warranty. - • **Powerful 5-Channel Output:** Up to 50W per channel delivers crystal-clear sound for any setup, indoor or outdoor. - • **User-Friendly Remote Control:** Effortless tone, volume, and mode adjustments with intuitive LED indicators and multifunction buttons. - • **Immersive Bass Shaker Integration:** Feel every beat and crash with enhanced vibration feedback for racing sims and home cinema. - • **Versatile Multi-Input Connectivity:** Seamlessly switch between Bluetooth, AUX, and optical inputs for ultimate audio flexibility. ## Overview The Fosi Audio HT4S is a compact yet powerful 4- or 5-channel Bluetooth amplifier designed for versatile audio setups. Supporting Bluetooth, AUX, and optical inputs, it delivers up to 50W per channel with clear, immersive sound enhanced by bass shaker compatibility. Its durable CNC-machined aluminum chassis and user-friendly remote make it perfect for outdoor speakers, home theaters, and racing simulators, backed by a 24-month warranty. ## Description Easily handle various audio inputs and outputs, providing up to 5 channels of output for seamless integration and flexible configurations to meet diverse audio needs. 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, 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 Providing sufficient power output and ensuring pure sound with great clarity and separation. Long press to power the device on/off, short press to switch input modes and volume adjustment. Adaptable to 5.0 or 4.1 channel audio setups indoors or outdoors. Allowing you to effortlessly restore the original sound when adjusted to the center position 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. Input modes are color-coded for easy use: blue for Bluetooth, orange for AUX, and red for OPT, to enhance the intuitiveness of operation. Provides functions like device power on/off, input mode switching, one-touch mute, etc., offering greater convenience. Constructed with a full metal casing, CNC machined, finely sandblasted for a simple yet durable and rugged design. Amplifying Your Voice, Shaping Our Innovation Discover Fosi Audio - Your HiFi Solution! We're a tech-driven brand, crafting innovative audio products around the world. Our vision: Affordable excellence for each consumer. Our mission: Redefining HiFi with cost-effective innovations. Join Fosi Audio on this unique audio journey! ## Features - All-in-One Amp: A mini amplifier that integrates DAC and power amplification. This stereo amplifier supports up to 5 channels output, which can be changed between 4.1 and 5.0 channels. Supports Bluetooth, AUX and optical digital inputs as well as front output and up to 5 speaker outputs. - Multi Scenario Solution: Ideal for pairing with outdoor speakers or wall-mounted speakers; patio, cafe, restaurant, bar, etc. perfect for installing 2 to 5 channel sound systems in environments. It can also be used as a home theater or desktop HiFi system amplifier and can meet your various needs from indoor to outdoor use. - Improved Immersion: Take your glitter racing and home cinema experience to a whole new level! When paired with bass shakers, sufficient power output and bass boost help significantly increase the realisticism of racing simulator games. When watching movies at home, vibration feedback can also help you experience your movies in another size, and every movie feels more realistic as if in a cinema. - Effortless Operation: Built-in power supply with remote control, support bass and treble tone setting, a multifunctional central button for volume control, on/off and mode changing, LED mode indicator ambient light, etc. With a comprehensive user-friendly design. Music enjoyment has never been easier. - Elegant & Durable: CNC solid construction and fine metal sandblasting process accentuates a minimalist aesthetic with Fosi Audio's all-aluminum alloy body design. Full metal housing provides durability and you can benefit from Fosi Audio's 24 month warranty for each unit. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CYQ1B598 | | Best Sellers Rank | #14,487 in Electronics (See Top 100 in Electronics) #31 in Home Audio Amplifiers | | Brand | Fosi Audio | | Built In Media | HT4S Bluetooth Amplifier | | Country Of Origin | China | | Customer Reviews | 4.1 4.1 out of 5 stars (370) 4.1 out of 5 stars | | Manufacturer | Fosi Audio | | Mfr Part Number | HT4S | | Model Number | HT4S | | Number Of Items | 1 | | Unit Count | 1 Count | ## Product Details - **Item dimensions L x W x H:** 15.5 x 18.3 x 5.1 centimeters - **Manufacturer:** Fosi Audio - **Maximum supply voltage:** 230 Volts - **Mounting type:** Freestanding - **Voltage:** 230 Volts ## Images ![– HT4S Bluetooth Amplifier for Outdoor Speakers, Bass Shaker Sim 4-Channel Power Amp for Racing Cockpit 4.1/5.0 Ch Stereo Home Audio Receiver with AUX/Optical Input Remote Control - Image 1](https://m.media-amazon.com/images/I/51Iqgx-WUaL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ good product *by on Reviewed in the United Arab Emirates 9 June 2025* The unit is good easy to install, bluetooth option is excellent. pair with bose 301 sound is fantastic.Planning to buy another one. My only concern is the unit does not have ventilation and sometimes using it on high volume the surface of the unit get hot. I'm happy and hope it will last. I love the size, you can carry anywhere, simple and easy. the remote control needs some improvement. ### ⭐⭐⭐⭐⭐ a great option for those seeking a compact, affordable, and high-quality amplifier *by on Reviewed in the United Kingdom 9 September 2024* The Fosi Audio HT4S is a compact yet powerful Bluetooth amplifier. It combines Bluetooth connectivity, solid build quality, and impressive sound performance into a small, user-friendly package.Design and Build QualityThe first thing you'll notice about the Fosi Audio HT4S is its sleek and compact design. Housed in a sturdy metal casing, the amplifier feels durable and well-made, with a minimalist aesthetic that can easily blend into any home audio setup. Its small footprint makes it a perfect choice for users with limited space, whether on a desk, bookshelf, or entertainment center.The front panel features simple and intuitive controls, including a volume knob, input selector switch, and an LED indicator. There are also several input options, including RCA and Bluetooth, making it versatile for connecting multiple audio sources. The Bluetooth antenna is discreet yet effective, ensuring a stable connection.Features and ConnectivityThe Bluetooth 5.0 capability of the HT4S is one of its standout features. It offers seamless wireless connectivity, allowing you to stream music from smartphones, tablets, or laptops with ease. Pairing is quick and reliable, and the Bluetooth range is impressive, maintaining a stable connection even across larger rooms. The Bluetooth signal supports aptX, which ensures high-quality audio streaming with minimal latency.In addition to Bluetooth, the HT4S offers RCA inputs, allowing for wired connections to a wide variety of audio devices, CD players, or desktop computers. This makes it a versatile amplifier, suitable for both modern and traditional audio setups.Sound PerformanceFor such a compact amplifier, the sound quality of the Fosi Audio HT4S is remarkable. Powered by a high-performance amplifier, it delivers clean, powerful sound that punches above its weight in terms of size and price. The HT4S can drive a wide range of speakers, from small bookshelf models to larger floor-standing units, with ease.The sound signature is balanced and detailed, with a slight emphasis on the midrange and highs, making it ideal for vocal-heavy music or instrumental tracks. Bass is tight and controlled, though not overly boomy. If you're looking for more bass impact, pairing the HT4S with a subwoofer would be a good idea, as it lacks a dedicated bass boost feature.One of the most impressive aspects of the HT4S is its low noise floor. Even at higher volumes, it produces minimal distortion, providing clear and crisp audio output. Whether you're using it for casual music listening or as part of a more serious home audio system, the sound quality is more than satisfactory.Ease of UseThe HT4S is designed with user convenience in mind. Setting up the amplifier is straightforward, and the controls are intuitive. The volume knob has a smooth, precise feel, and switching between inputs is as simple as flipping a switch. The LED indicator makes it easy to see which input mode you're in.Durability and Heat ManagementThe metal housing not only looks sleek but also helps with heat dissipation. The HT4S runs cool, even during extended listening sessions at higher volumes. This is an important feature, especially for those planning to use the amplifier for long hours. Its solid build also suggests that it will stand the test of time with proper care.Price and ValueAt its price point, the Fosi Audio HT4S offers excellent value for money. It’s hard to find such a compact amplifier that delivers on sound quality, build, and Bluetooth performance at this price range. It’s an ideal choice for those looking for an affordable yet high-performing amp to power bookshelf speakers or create a wireless streaming setup.Final VerdictThe Fosi Audio HT4S Bluetooth Amplifier is a great option for those seeking a compact, affordable, and high-quality amplifier. Its combination of Bluetooth 5.0 connectivity, versatile inputs, and impressive sound quality makes it suitable for a wide range of applications, from casual listening to powering more serious home audio systems.Pros:Compact, durable, and stylish designBluetooth 5.0 with aptX for high-quality wireless streamingClean and powerful sound with low distortionMultiple input options (Bluetooth and RCA)Easy to set up and useCons:Bass output might feel a bit light for bass-heavy genresLacks a dedicated subwoofer outputOverall, the Fosi Audio HT4S offers excellent performance for its price, making it a fantastic choice for audiophiles on a budget or anyone looking to enhance their home audio setup. ### ⭐⭐⭐⭐⭐ ABSOLUTELY beautiful both visually and audibly. Will bring your speakers to life! *by on Reviewed in the United States 4 September 2024* TLDR: If you're looking for a beautifully built, excellent sounding bluetooth amp this is the one. It excels in audio clarity with little to no distortion at high realistic listening volumes, offers multiple audio input modes that you can select between with a convenient remote, and has the most output channels of any bluetooth amp for this price point. An absolute MUST BUY for any one in the market for a small nice amp.Right out of the gate, this new Fosi Audio bluetooth amp is absolutely amazing. The build quality and design are top notch given the price of this amp. Really hard to beat especially when compared to other similarly priced amps on Amazon.Rated at max power of 50watts per channel at 4ohms, this thing has enough power to realistically handle any speakers you throw at it given its use case. I tested these on my Wharfedale Evo 4.2 bookshelf speakers (these are no slouch!) and WOW what a difference in audio quality over my $1k Denon AVR for music. The DAC on this bluetooth amp is shockingly very clear and defined, definitely ideal for music. Added with the tone controls on the front of the amp, this amp is more versatile than ever. I've got 2 other models of Fosi Audio amps, and this is by-far superior to the other older models that I've got. It's got much better clarity and doesn't distort at higher volumes in comparison to the TB10D that I have.One of my favorite improvements over the previous model bluetooth amps from Fosi is that this new HT4S model has the ability to select your audio input mode. I can now swap between bluetooth on my phone for music and optical/aux in from the TV/Apple TV. On my older bluetooth amp from Fosi it was an on/off switch control and that was it. Both bluetooth and aux were active at the same time. So if I was watching something via the TV somebody else could bluetooth freely and play music over my TV audio which was very frustrating. With this new HT4S model that issue is now gone and the beautiful LED light bar on the front panel displays which audio mode you're currently in by changing colors. ## Frequently Bought Together - 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 - Banana Plugs with Dual Set Screws,Black and Red Aluminum Shell,6 Pairs - Polk Audio Atrium 4 Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/671682535-ht4s-bluetooth-amplifier-for-outdoor-speakers-bass-shaker-sim-4](https://www.desertcart.gr/products/671682535-ht4s-bluetooth-amplifier-for-outdoor-speakers-bass-shaker-sim-4) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-10-16*