--- product_id: 449234251 title: "BT30D PRO" brand: "fosi audio" price: "€ 247.31" currency: EUR in_stock: true category: "Fosi Audio" url: https://www.desertcart.sk/products/449234251-bt30d-pro store_origin: SK region: Slovakia --- # Bluetooth 5.0 with 15m stable range 165W x2 + 350W power output Precise bass & treble control knobs BT30D PRO **Brand:** fosi audio **Price:** € 247.31 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your sound game—because your audio deserves to be as sharp as your style. ## Quick Answers - **What is this?** BT30D PRO by fosi audio - **How much does it cost?** € 247.31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/449234251-bt30d-pro) ## 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 - • **Powerhouse Performance:** Unleash crystal-clear sound with 165W x2 + 350W output powered by dual TPA3255 chips. - • **Tailored Bass Experience:** Fine-tune your subwoofer frequency and volume for bass that matches your vibe perfectly. - • **Seamless Wireless Freedom:** Bluetooth 5.0 ensures stable, drop-free audio streaming up to 15 meters—indoors or outdoors. - • **Premium Durability & Design:** All-metal chassis with precision controls and sleek build—built to impress and last. - • **Versatile 2.1 Channel Setup:** Effortlessly connect passive speakers and subwoofers for immersive home theater or HiFi sound. ## Overview The Fosi Audio BT30D Pro is a compact yet powerful 2.1 channel Bluetooth amplifier delivering 165W per channel plus 350W subwoofer power via advanced TPA3255 Class-D chips. It offers precise bass and treble controls, stable Bluetooth 5.0 connectivity up to 15 meters, and a durable all-metal design, making it ideal for desktop, outdoor, or bookshelf speaker setups. Perfect for audiophiles seeking premium sound clarity and customizable bass in a sleek, reliable package. ## Description Buy 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: Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - 2.1 Channel Amplifier:The BT30D PRO integrated amplifier features two sets of passive speaker outputs and one set of passive subwoofer outputs, making it easy to set up a 2.1 home theater or other stereo HiFi audio systems. - High Power with Exceptional Sound Quality:Equipped with two high-end Texas Instruments TPA3255 Class-D amplifier chips, the amplifier home audio delivers clear and pure sound without distortion or clipping, stably outputting up to 165W x 2 + 350W of power. - Bass Beast:Whether you're a gamer, movie buff, or music lover, the subwoofer amplifier provides tight, smooth, and natural - sounding bass. It features two dedicated knobs for subwoofer control: the SUB FREQ knob allows precise frequency adjustment of passive subwoofers from 0 to 300 Hz, while the SUB VOL knob lets you set the desired volume level. This gives you full control over the bass output to suit your personal preferences and listening environment. - Bluetooth 5.0 Connectivity:This Bluetooth amplifier maintains a stable connection and delivers clear audio over a range of up to 15 meters. This makes it perfect for enjoying your favorite tunes or audio content in outdoor areas such as your yard, terrace, or poolside, without worrying about signal drop - outs or interruptions. - Exquisite Craftsmanship:This mini amplifier is meticulously crafted with a solid, all - metal body that ensures durability and longevity. The well - designed case, along with the high - quality controls and connectors, exudes a sense of premium build and attention to detail. The exquisite packaging further adds to the overall appeal and value of the bass amp. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09YNBHR73 | | Best Sellers Rank | #6,470 in Electronics ( See Top 100 in Electronics ) #14 in Audio Component Amplifiers | | Brand | Fosi Audio | | Built-In Media | 32V/5A Power Supply x1, Bluetooth Antenna x1, Fosi Audio BT30D PRO Subwoofer Amplifier x1, User Manual x1 | | Customer Reviews | 4.4 4.4 out of 5 stars (1,875) | | Item Type Name | Bluetooth Amplifier | | Item Weight | 1.5 pounds | | Manufacturer | Fosi Audio | | Mfr Part Number | BT30D Pro | | Model Number | BT30D PRO | | Number of Items | 1 | | Unit Count | 1 Count | | Warranty Description | 24 Month Manufacturer | ## Product Details - **Audio Output Mode:** Stereo - **Brand:** Fosi Audio - **Color:** Black - **Compatible Devices:** Speaker - **Connectivity Technology:** Bluetooth, RCA - **Connector Type:** RCA - **Controller Type:** Android - **Item Weight:** 1.5 Pounds - **Special Feature:** Built-In Bluetooth - **Surround Sound Channel Configuration:** 2.1 ## Images ![BT30D PRO - 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.sk/products/449234251-bt30d-pro](https://www.desertcart.sk/products/449234251-bt30d-pro) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-06*