--- product_id: 448274598 title: "Fosi Audio BT30D Pro Mini Hi-FI Bluetooth Amplifier with TPA3255, 165W x2+350W 2.1CH Subwoofer Amplifier for Outdoor Shelf Speakers, Subwoofers" brand: "fosi audio" price: "AR$453750" currency: ARS in_stock: true category: "Fosi Audio" url: https://www.desertcart.com.ar/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255 store_origin: AR region: Argentina --- # TPA3255 chip for high efficiency Bluetooth 5.0 wireless tech 165W x2 + 350W subwoofer power Fosi Audio BT30D Pro Mini Hi-FI Bluetooth Amplifier with TPA3255, 165W x2+350W 2.1CH Subwoofer Amplifier for Outdoor Shelf Speakers, Subwoofers **Brand:** fosi audio **Price:** AR$453750 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your sound game—because your ears deserve the best! ## Quick Answers - **What is this?** Fosi Audio BT30D Pro Mini Hi-FI Bluetooth Amplifier with TPA3255, 165W x2+350W 2.1CH Subwoofer Amplifier for Outdoor Shelf Speakers, Subwoofers by fosi audio - **How much does it cost?** AR$453750 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255) ## 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 - • **Next-Gen Wireless:** Seamlessly stream HiFi audio with cutting-edge Bluetooth 5.0 connectivity—ditch the wires, not the quality. - • **Powerhouse Performance:** Unleash 165W per channel plus a booming 350W subwoofer output for room-filling sound. - • **Sleek & Durable Design:** Modern black aluminum chassis that complements any setup while ensuring long-lasting durability and heat dissipation. - • **Pro-Grade Amplification:** Equipped with dual Texas Instruments TPA3255 chips for crystal-clear, distortion-free sound and ultra-low power consumption. - • **Customizable Audio Control:** Fine-tune your soundscape with dedicated subwoofer, bass, treble, and master volume controls for a personalized listening experience. ## Overview The Fosi Audio BT30D Pro is a compact yet powerful 2.1 channel Bluetooth 5.0 amplifier delivering 165W per stereo channel and 350W to a subwoofer. Featuring advanced TPA3255 Class-D amplifier chips, it offers high efficiency with minimal idle power loss. Designed for audiophiles and DIY enthusiasts, it supports passive and powered speakers with customizable audio controls, all housed in a sleek black aluminum case. Perfect for creating immersive home or outdoor HiFi sound systems with wireless convenience. ## Description Buy Fosi Audio BT30D Pro Mini Hi-FI Bluetooth Amplifier with TPA3255, 165W x2+350W 2.1CH Subwoofer Amplifier for Outdoor Shelf Speakers, Subwoofers online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase. ## Features - Advanced 2.1CH Bluetooth 5.0 Receiver Amplifier achieves HiFi music quality, the best choice for your home audio entertainment. You can connect passive speakers/passive subwoofer/powered speakers/powered subwoofer to DIY a stereo sound system. - Fosi Audio BT30D Pro is the upgraded version for BT30D. All-NEW Black Aluminum Appearance. BT30D VS BT30D Pro: MAX Power Output: 50 Watt x2+100 Watt VS 165 Watt x2+350 Watt, Amplifier Chip: TPA3116D2 VS TPA3255. Output: RCA output for powered subwoofers VS 3.5MM full-range output for powered subwoofers and speakers. Just choose one model for your needs. - BT30D Pro Adopts 2PCS Texas Instruments TPA3255 high-performance Class-D power amplifier chip. BT30D Pro can drive up to 2 x 175 W into 4-Ω load and 2 x 220 W into 3-Ω load. In addition to excellent audio performance, TPA3255 achieves both high power efficiency and very low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations. - Professional wireless amp with subwoofer frequency, SUB volume, master volume/bass/treble control. No pop sound, no audible noise during the connection. Have a good time with Hifi music journey. - What You Get: BT30D Pro Amp x1, power supply x1, user manual x1, our worry-free 24-month warranty, and friendly customer service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09YNBHR73 | | Best Sellers Rank | #12,747 in Electronics ( See Top 100 in Electronics ) #28 in Home Audio Amplifiers | | Brand | Fosi Audio | | Built-In Media | 32V power supply | | Customer Reviews | 4.4 4.4 out of 5 stars (1,697) | | Item Type Name | Bluetooth Amplifier | | Item Weight | 680 g | | Manufacturer | Fosi Audio | | Mfr Part Number | BT30D Pro | | Model Number | BT30D PRO | | Unit Count | 1 Count | ## Product Details - **Brand:** Fosi Audio - **Compatible devices:** Personal Computer, Speaker - **Connectivity technology:** Bluetooth (wireless) - **Controller type:** Android - **Special features:** Built-In Bluetooth, RCA, Subwoofer ## Images ![Fosi Audio BT30D Pro Mini Hi-FI Bluetooth Amplifier with TPA3255, 165W x2+350W 2.1CH Subwoofer Amplifier for Outdoor Shelf Speakers, Subwoofers - Image 1](https://m.media-amazon.com/images/I/51ai7X4dnLL.jpg) ## Questions & Answers **Q: What is the subwoofer frequency crossed at?** A: According to the Fosi site, the 'sub freq' knob does exactly what you would expect, acts as a variable crossover point control. ""...adjustable 40-300Hz cutoff frequency for subwoofer... It doesn't say what the slope of the cutoff is. **Q: Are they screw fasteners for the speaker wires?** A: The unit has a set of combination binding pot/RCA connections. So it will accept bare wires or RCA connectors for your speakers. **Q: has any one used this with a non powered sub, and did it sound OK ?** A: William, I have this Fosi amp for a small patio sound system. I do have a sub speaker but it is powered and not passive. I am 100% satisfied with the sound of my system. The Bluetooth works great as well as the aux input. This however does not answer your question but I may give you something to consider. According to Fosi specs, the rated output is 50 watts + 50 watts + 100 watts. I deduce that to mean 50 watts for each left & right speaker and 100 watts for sub speaker. That should be a sufficient 2 to 1 ratio for output division. Fosi also states that the output can be increased with an option 8 amp power supply, but they don’t state exactly how much the output increases. Whether or not a passive sub speaker would “sound ok” has many other variables, ie: size of speaker, sensitivity of speaker, speaker material, type of enclosure that houses speaker, if the enclosure is ported and if the port is tuned properly, if speaker is front firing or down firing, acoustical environment, etc, etc. It is possible a passive mode that the sub speaker may not “sound” satisfactory but may not be the fault of the Fosi amp. I hope this was helpful. **Q: I see in some reviews that there should be a bluetooth/rca switch on the back , but no switch exists on mine. how do i switch to bt and pair it?** A: For the BT30D theres a power switch on the front. When you turn it on it activates the Bluetooth, but uses the RCA jacks until you actually pair a device via Bluetooth. Just unpair the Bluetooth if you want to use a turntable or DAC. ## Frequently Bought Together - Fosi Audio Bluetooth Subwoofer Amplifier 2.1, BT30D Pro Subwoofer Amp with TPA3255 Chips 165W x2+350W & Bass Treble Control, 2.1 Channel Sub Amplifier for Desktop/Outdoor/Bookshelf Speakers - 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.com.ar/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255](https://www.desertcart.com.ar/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-20*