--- product_id: 68014327 title: "Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers" brand: "fosi audio" price: "₱13956" currency: PHP in_stock: true reviews_count: 13 url: https://www.desertcart.ph/products/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2 store_origin: PH region: Philippines --- # Bluetooth 5.0, 50ft range 100W x 2 stereo power Bass & treble controls Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers **Brand:** fosi audio **Price:** ₱13956 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your sound game—because your speakers deserve the best! ## Quick Answers - **What is this?** Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers by fosi audio - **How much does it cost?** ₱13956 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/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2) ## 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 - • **Powerful Stereo Output:** 100 watts per channel delivers room-filling, crystal-clear sound that commands attention. - • **Audiophile-Grade Clarity:** TI TPA3116D2 chips ensure ultra-low distortion (<0.04% THD) for pristine highs and deep, punchy lows. - • **Compact & Durable Design:** Sleek all-metal chassis fits any setup—home, office, or outdoor—backed by a 24-month warranty for peace of mind. - • **Tailored Audio Experience:** Adjust bass and treble on the fly to match your vibe and space perfectly. - • **Seamless Wireless Streaming:** Bluetooth 5.0 connectivity with up to 50ft range keeps your music flowing without limits or wires. ## Overview The Fosi Audio BT20A Bluetooth Amplifier is a compact, high-performance Class D stereo amp delivering 100W per channel with ultra-low distortion. Featuring Bluetooth 5.0 for wireless streaming up to 50 feet, customizable bass and treble controls, and TI TPA3116D2 chips for audiophile-grade sound clarity, it’s designed for home, office, or outdoor passive speakers. Its durable all-metal build and 24-month warranty make it a reliable upgrade for any audio setup. ## Description 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! Stream Every Sonic Detail Stereo Power Amplifier, 300W x 2 Hi-Fi Audio Amp with PFFB Technology, LDAC Bluetooth 6.0 Balanced Stereo Amplifier Home Audio Component Mini 2 Channel TPA3255 Bluetooth 5.0 Home Audio Stereo 2 Channel Amplifier 300W x2 TPA3255 Class D Home Audio Mini Speaker 2 Channel Amp 300 Watts x2 Tube Integrated Amplifier with DAC, 2 Channel Home Audio Stereo Power Amp for HiFi Bookshelf Speakers Bluetooth Stereo Amplifier Home Audio Component Mini Amp with VU Meter Bluetooth Amplifier for Outdoor Speakers, 4 Channel Power Amp for Bass Shaker Sim Racing Cockpit For the past 5 years, we have been designing and developing audio products for real life, aiming to provide a perfect blend of premium acoustic performance with a modern, elegant design. We’re not limited by what’s possible now. With a bold vision for the future of audio products, we painstakingly develop advanced technology and innovative research to make it a reality. We use meticulous production technology, combined with low-key modern industrial design, to present the sound as clear and pure as flawless crystal. Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design and have many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio products. Power Adapter: 24V/4.5A, DC Input Range: 12-24V MAX Power Output: 100W x 2, Terminating Impedance: 2 Ohm - 8 Ohm THD ≤ 0.04%, SNR ≥ 98dB, Input Sensitivity ≤ 280mV Frequency Range: 20Hz - 20kHz (±1 dB), Input Mode: Bluetooth and RCA Bluetooth Transmission Distance: Up to 50 Ft up to 50ft connection Instant setup with phones, tablets, and almost any other Bluetooth-enabled device. easy to fit your system Exclusively designed for the customers who pursue HiFi sound. MAX power output 100W*2 100 watt per channel power output can drive most home passive speakers to create astonishing Sound. made for audiophile Even at high volumes, there’s less than 0.04% harmonic distortion resulting in remarkable clarity. for bookshelf speakers Easy to fit your audio system with Bluetooth and RCA input. TI TPA3116D2 Chip The Texas Instruments TPA3116D2 Chip presents music with rousing highs and deep lows. With a built-in power protection circuit, there are no sparks flying when you plug the power adapter into the amplifier. Safe for use! Fosi Audio BT20A equip with an energy-efficient and stable power supply can get an astonishing sound. BT20A BT20A MAX BT20A PRO BT30D BT30D PRO V3 TB10D ## Features - 【Bluetooth 5.0】Featuring an integrated Bluetooth ATS2853 chip, this bluetooth amplifier supports streaming up to 50ft (15m). Effortlessly connect via Bluetooth to enjoy high-quality music from MP3, Phone, Pad, PC, or Laptop, embracing the wireless era. - 【Compact Design】Our mini amplifier offers a sturdy, space-saving design for home, office, or outdoor use. Elevate your audio experience with bass and treble controls to tweak settings as needed. - 【Immersive Audio Quality】Elevate your audio environment with room-filling sound, driven by a total output of 100W x 2 at 4 ohms. Covering a wide frequency range of 20Hz - 20kHz with less than 0.04% THD, achieve the perfect balance of volume and detail for an unparalleled home entertainment experience. - 【Superior Sound】Utilizing 2 integrated Classic TI TPA3116D2 chips, this device provides crisp, clean sound with crystal-clear highs and smooth, pure bass. It enhances voice clarity and speaker performance while maintaining lower energy consumption. - 【 Exquisite Craftsmanship】This power amplifier comes nicely packaged with a solid feel to the case and the controls and connectors. The all-metal body ensures durability, and you can enjoy the peace of mind provided by Fosi Audio's 24-month warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07BQC7GNL | | Best Sellers Rank | 1,268 in Electronics & Photo (See Top 100 in Electronics & Photo) 2 in Hi-Fi Amplifiers | | Box Contents | Bluetooth Antenna x1, 32V 5A Power Supply x1 | | Brand Name | Fosi Audio | | Country Of Origin | China | | Customer Reviews | 4.5 4.5 out of 5 stars (9,403) 4.5 out of 5 stars | | Item Weight | 567 Grams | | Manufacturer | Fosi Audio | | Manufacturer Part Number | BT20A | | Model Number | BT20A | | Number Of Items | 1 | | Product Warranty | 2 years | | Unit Count | 1.0 count | ## Product Details - **Item dimensions L x W x H:** 13.2 x 9 x 3.6 centimetres - **Manufacturer:** Fosi Audio - **Maximum supply voltage:** 24 Volts - **Minimum supply voltage:** 12 Volts - **Voltage:** 230 Volts ## Images ![Fosi Audio BT20A Bluetooth Amplifier for Speakers, Mini Stereo 2 Channel Amp Class D, with TPA3116 Chips 100W x 2 and Bass Treble Controls, for Home Audio Outdoor Passive Desktop Bookshelf Speakers - Image 1](https://m.media-amazon.com/images/I/61+cd+AMZcL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Can these be connected to skytronic 125.061 100w 4ohm ceiling speakers?** A: not sure.i have them connected to jbl 100 w speakers. copes fine **Q: Can I use it for 2 Technics speakers, 3way, 6ohm, 100w each?** A: I've got it wired to my old Gale Gold Mark 2, rated 6-8 ohms 100w I think? Sounds great! **Q: I want to use a 12v adapter. What size adapter pin/head is required? I have tried a few spares that I had, but none of them fit.** A: OD: 5.5mm; ID: 2.5mm BT20A comes with a 24V adapter, you can find one like its size. **Q: Can a technics direct drive turntable work via the rca input or does the turntable need a preamp?** A: The input sensitivity is stated as less than or equal to 280mV. If your turntable outputs I similar voltage (I guess in the range of 150 to 280mV) then I would say you probably don't need a preamp. However, if it's output is a lot less, you will need a preamp. Fosi have a range of turntable preamps to choose from. Look up the specs of your turntable to find it's output voltage range. Hope that helps. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Surprisingly great. I am really surprised *by on Reviewed in the United Kingdom 4 June 2023* I brought the first amp a while ago and sent it back as I wasn’t happy with the sound quality or output. I think I said it may be ok for a small broom cupboard.Roll on 2 years or so and having re-read the reviews I decided I would give it another goWith a fresh set of earsMaybe I had a bad one last time of they have tweaked the firmware or something, But it’s a very different amp from the one I recall - To my surprise this one was excellent- I would say unbeatable for the price.Ok so some complain that the Bluetooth is not protected so anyone can jump on it and that would be a nice extra but it is what it is.It’s driving a couple of external speakers with a well known home assistant input for the garden and I’m seriously impressed. Also tried some mission bookshelf speakers I had spare. Bass and treble are adjustable and work remarkably well. Bluetooth seems solid and clear; aux in is even better.Recommendation: set bass and treble to 50% (pointing straight up) as a starting point, this will give you a good reference point.I’m really fussy about sound and wasn’t expecting much but I’m really glad I gave this little beast a second go.I would absolutely recommend for small or mid size room. ### ⭐⭐⭐⭐⭐ Astounding *by on Reviewed in the United Kingdom 24 December 2020* On a value for money basis this clearly deserves 5 stars. The unit itself is tiny, but it packs a mighty punch, plenty loud enough for an average sized room. Set-up was straight forward, but I'd advise buying some 'banana plugs' for hassle free connection of speakers. Blue tooth connectivity is good and, unlike other reviewers, I can discern no difference in sound quality when compared to CD player via the RCA option. When connecting a lap-top via bluetooth I find I have to switch bluetooth off, then on again in order for the unit to find a connection, but this is a minor point. I don't seem able to make a connection with my Android phone at all, but maybe that's something I'm doing wrong. Audiophiles, or those with a very discerning ear might detect some minor 'wooliness' in sound quality. Personally, I listen to rock music so for me it's not an issue at all really - for a purchase price of a mere £63 I think you have to be prepared for a few imperfections. I was about to fork out nearly £600 for an amp with bluetooth connectivity. Absolutely no regrets that I took a chance on this instead. ### ⭐⭐⭐⭐ Great little unit with punchy audio and no background noise *by on Reviewed in the United Kingdom 4 January 2024* I used this unit to drive pair of floor-standing speakers which I use with my PC (I like decent sound quality).This unit delivers punchy bass with no background noise on either the aux input or via Bluetooth. I'd had background noise problems with the previous amplifier (a Tangent 50W per channel unit), probably due to a ground loop. The Fosi BT20A unit background noise is completely inaudible. The unit is also very small (about 1/10 the size of the amp it replaced) but with the same output power. This is probably due to the fact that it is a Class D amplifier which makes it very efficient. It is more than capable of filling the room with sound at concert hall levels.The only issue I've had is that occasionally the Bluetooth input will not reconnect after the PC has been asleep. This is easily solved by briefly cycling the BT20A power.In short, I'd happily buy another. ## Frequently Bought Together - Fosi Audio BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker - Banana Plugs with Dual Set Screws,Black and Red Aluminum Shell,6 Pairs - Amazon Basics Speaker Cable, Easy Assembly, 16-Gauge, Bronze, 100 ft --- ## 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/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2](https://www.desertcart.ph/products/68014327-fosi-audio-bt20a-bluetooth-amplifier-for-speakers-mini-stereo-2) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-08-15*