--- 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: "€ 278.69" currency: EUR in_stock: true reviews_count: 12 category: "Fosi Audio" url: https://www.desertcart.hr/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255 store_origin: HR region: Croatia --- # 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:** € 278.69 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your sound game — don’t just listen, experience every beat! ## 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?** € 278.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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:** Seamless Bluetooth 5.0 connectivity ensures crystal-clear Hi-Fi streaming without interruptions. - • **Powerhouse Performance:** Unleash 165W per channel plus a booming 350W subwoofer output for immersive sound. - • **Sleek & Durable Design:** Modern black aluminum chassis blends style with ruggedness, perfect for both indoor and outdoor setups. - • **Pro-Grade Amplification:** Equipped with dual Texas Instruments TPA3255 chips for ultra-low idle power loss and superior audio fidelity. - • **Customizable Sound Control:** Fine-tune your audio with dedicated subwoofer, bass, treble, and master volume knobs 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 power loss and customizable sound controls. Its sleek black aluminum design and versatile connectivity make it ideal for upgrading home or outdoor audio systems with professional-grade Hi-Fi sound. ## Description Product description Fosi Audio BT30D PRO 2.1 CH Bluetooth Power Amplifier Compact yet Powerful Redefining HiFi with Unmatched Value This 2.1CH mini Bluetooth amp is praised by customers for its appearance, value, and sound quality. They note its impressive presentation, ability to drive speakers and add depth to the soundscape. It can power two speakers and a subwoofer, making home audio setup easy. THD: ≤ 0.03%; SNR: ≥ 108dB; Frequency Range: 20Hz - 20kHz (±1 dB) MAX Power Output: 165W×2+350W Input: Bluetooth + RCA; Input Sensitivity: ≤ 600mV Output: Passive/Active Speakers+ Passive/Active Subwoofer One Device for All Needs Reliable power amplifier suited for high impedance speakers and subwoofer Stable Connectivity You will have crystal clear audio even over Bluetooth and the range is easily more than 15m. Ideal for Your Subwoofer Incredibly powerful bass that stirs up thousands of waves. Max Output Power 165W×2+350W Two advanced chips ensure pure and powerful sound with great clarify and separation. All-Aluminum Alloy Chassis Knobs designed for subwoofer The SUB FREQ knob allows frequency adjustment of passive subwoofers from 0 to 300 Hz, and the SUB VOL knob sets their volume. Pre-Out Connector Build a home stereo system on your desktop by connecting a powered speaker, subwoofer, or amplifier to the BT30D Pro through the 3.5mm PRE output for a compact audio receiver setup. Comparison BT30D PRO BT20A PRO BT30D BT20A MC101 Review: Working good - Very good product.. Very strong Bass. Review: Awesome Sound Without Breaking the Bank! - I recently got the Fosi Audio BT30D Pro Amplifier, and it's amazing! It's like magic for my sound system, making everything sound super good without costing a ton. I hooked it up with my Micca MB42X Passive Bookshelf Speakers and a Rockford Fosgate RF-1400T Basstube Subwoofer (300W RMS), and now I've got this awesome 2.1 setup. And get this—it all cost me less than $300! That's a steal for how great it sounds. With this setup, it's not just about hearing the bass; you can really feel it all around the room. The music sounds so clear and full, which is awesome, especially since it didn't cost me a fortune. Overall, I highly recommend the Fosi Audio BT30D Pro Amplifier to anyone looking to enhance their audio experience without breaking the bank. It's a fantastic investment that will undoubtedly elevate your listening pleasure to new heights. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09YNBHR73 | | Best Sellers Rank | #16,273 in Electronics ( See Top 100 in Electronics ) #36 in Home Audio Amplifiers | | Brand | Fosi Audio | | Built-In Media | 32V power supply | | Customer Reviews | 4.4 out of 5 stars 1,762 Reviews | | Item Type Name | Bluetooth Amplifier | | Item Weight | 1.5 Pounds | | 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Working good *by N***N on 27 October 2025* Very good product.. Very strong Bass. ### ⭐⭐⭐⭐⭐ Awesome Sound Without Breaking the Bank! *by H***I on 4 April 2024* I recently got the Fosi Audio BT30D Pro Amplifier, and it's amazing! It's like magic for my sound system, making everything sound super good without costing a ton. I hooked it up with my Micca MB42X Passive Bookshelf Speakers and a Rockford Fosgate RF-1400T Basstube Subwoofer (300W RMS), and now I've got this awesome 2.1 setup. And get this—it all cost me less than $300! That's a steal for how great it sounds. With this setup, it's not just about hearing the bass; you can really feel it all around the room. The music sounds so clear and full, which is awesome, especially since it didn't cost me a fortune. Overall, I highly recommend the Fosi Audio BT30D Pro Amplifier to anyone looking to enhance their audio experience without breaking the bank. It's a fantastic investment that will undoubtedly elevate your listening pleasure to new heights. ### ⭐⭐⭐⭐⭐ Good value for money *by R***J on 8 July 2025* Good Amp with decent power. Doesn’t heat up with the included 32V power supply while driving a pair of Jamo s426 ## 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.hr/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255](https://www.desertcart.hr/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-22*