---
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: "₨83568"
currency: LKR
in_stock: true
reviews_count: 12
category: "Fosi Audio"
url: https://www.desertcart.lk/products/448274598-fosi-audio-bt30d-pro-mini-hi-fi-bluetooth-amplifier-tpa3255
store_origin: LK
region: Sri Lanka
---

# TPA3255 Class-D chip, ultra-efficient 165W x2 + 350W subwoofer power Bluetooth 5.0 wireless connectivity 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:** ₨83568
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game — Feel every beat, own every moment!

## 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?** ₨83568 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/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

- • **Powerhouse Performance:** Unleash 165W per channel plus 350W subwoofer for room-filling sound.
- • **Sleek & Durable Design:** All-new black aluminum chassis blends premium aesthetics with rugged outdoor readiness.
- • **Pro-Grade Amplification:** Texas Instruments TPA3255 chip delivers crystal-clear, distortion-free sound with ultra-low power loss.
- • **Customizable Audio Control:** Master volume, bass, treble, and subwoofer frequency controls tailor your perfect soundscape.
- • **Seamless Wireless Streaming:** Bluetooth 5.0 ensures stable, high-fidelity audio without the clutter.

## Overview

The Fosi Audio BT30D Pro is a compact yet powerful 2.1 channel Bluetooth 5.0 amplifier featuring Texas Instruments’ TPA3255 Class-D chip. Delivering 165W per stereo channel plus 350W to a subwoofer, it supports passive and powered speakers for a customizable Hi-Fi experience. Its advanced controls and ultra-efficient design make it perfect for both indoor and outdoor audio setups, backed by a sleek black aluminum build and a 24-month warranty.

## 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.

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.

## 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 | #11,091 in Electronics ( See Top 100 in Electronics ) #28 in Home Audio Amplifiers |
| Item model number | BT30D PRO |
| Language | English |
| Manufacturer | Fosi Audio |
| Product Dimensions | 15.24 x 12.7 x 2.54 cm; 680.39 g |

## 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

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-06*