--- product_id: 657411224 title: "HT4S Bluetooth Amplifier 4.1/5.0 Ch Stereo for Outdoor Speakers, 4-Channel Power Amplifier for Bass Shaker Sim Racing Cockpit, Support AUX/Optical Input with Remote Control" brand: "fosi audio" price: "₱25836" currency: PHP in_stock: true category: "Fosi Audio" url: https://www.desertcart.ph/products/657411224-ht4s-bluetooth-amplifier-4-1-5-0-ch-stereo-outdoor store_origin: PH region: Philippines --- # Bass shaker support for sim racing Bluetooth + AUX + Optical inputs 4-channel power output HT4S Bluetooth Amplifier 4.1/5.0 Ch Stereo for Outdoor Speakers, 4-Channel Power Amplifier for Bass Shaker Sim Racing Cockpit, Support AUX/Optical Input with Remote Control **Brand:** fosi audio **Price:** ₱25836 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your sound game — because your space deserves more than just noise. ## Quick Answers - **What is this?** HT4S Bluetooth Amplifier 4.1/5.0 Ch Stereo for Outdoor Speakers, 4-Channel Power Amplifier for Bass Shaker Sim Racing Cockpit, Support AUX/Optical Input with Remote Control by fosi audio - **How much does it cost?** ₱25836 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/657411224-ht4s-bluetooth-amplifier-4-1-5-0-ch-stereo-outdoor) ## 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 - • **Seamless Connectivity:** Bluetooth, AUX, and optical inputs ensure effortless integration with all your devices. - • **User-Friendly Control:** Remote control with multifunctional knob and LED indicators for intuitive, hassle-free operation. - • **Sleek & Durable Design:** Premium CNC aluminum alloy body with minimalist metal sandblasting finish for a modern, lasting aesthetic. - • **Immersive Bass Experience:** Powerful bass boost and bass shaker compatibility elevate sim racing and movie nights to cinematic levels. - • **Versatile Multi-Channel Output:** Switch seamlessly between 4.1 and 5.0 channel modes to tailor your soundscape. ## Overview The Fosi Audio HT4S is a compact yet powerful 4-channel Bluetooth amplifier designed for versatile audio setups, supporting 4.1 and 5.0 channel outputs. It features multiple input options including Bluetooth, AUX, and optical, and is optimized for immersive experiences with bass shaker support, perfect for sim racing and home theaters. Its user-friendly remote control and premium aluminum build combine functionality with sleek durability, making it ideal for both indoor and outdoor audio environments. ## Description Fosi Audio HT4S Bluetooth Amplifier 4.1/5.0 Ch Stereo for Outdoor Speakers, 4-Channel Power Amplifier for Bass Shaker Sim Racing Cockpit, Support AUX/Optical Input with Remote Control : desertcart.in: Electronics ## Features - 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 aestheticIf you encounter problems during use, please refer to our manual or contact our after-sales team, and we will have professionals to answer your questions ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CYQ1B598 | | Best Sellers Rank | #29,589 in Electronics ( See Top 100 in Electronics ) #29 in Hi-Fi Amplifiers | | Box Contents | HT4S Bluetooth Amplifier | | Brand Name | Fosi Audio | | Country of Origin | China | | Customer Reviews | 3.8 3.8 out of 5 stars (371) | | Importer Contact Information | support@fosiaudio.com | | Item Type Name | AMPLIFIER | | Manufacturer | Fosi Audio | | Manufacturer Part Number | HT4S | | Model Number | HT4S | | Number of Items | 1 | | Packer Contact Information | support@fosiaudio.com | ## 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 4.1/5.0 Ch Stereo for Outdoor Speakers, 4-Channel Power Amplifier for Bass Shaker Sim Racing Cockpit, Support AUX/Optical Input with Remote Control - Image 1](https://m.media-amazon.com/images/I/51Iqgx-WUaL.jpg) ## Questions & Answers **Q: Q: HT4S Default Blue Light, Manual Mode Switch Required After Powering On** A: Upon powering up, the indicator light will turn blue (indicating Bluetooth mode by default). You have to switch modes manually. **Q: Q: HT4S Indicator Lights for Input Modes** A: Input modes are color-coded for easy use: blue for Bluetooth, orange for AUX, and red for OPT. **Q: Q: Does the HT4S Have a Standby Function?** A: The HT4S has no standby function. You can leave it powered on continuously. If you turn it off, you have to long-press the main volume knob for 1.5 seconds to activate the HT4S amplifier. ## 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.ph/products/657411224-ht4s-bluetooth-amplifier-4-1-5-0-ch-stereo-outdoor](https://www.desertcart.ph/products/657411224-ht4s-bluetooth-amplifier-4-1-5-0-ch-stereo-outdoor) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-09-17*