Replacing the op amps for both left and right channels in stereo mode, regardless of RCA or XLR inputs, will notably enhance sound quality. Mono Mode: Only replacing the op amps for the right channel.

Using XLR input mode allows for further sound quality enhancement by replacing the op amps for the XLR channel.

If a subwoofer is connected, there's the option to replace the op amps responsible for the subwoofer channel. Note: Carefully align the notch/the number '1' on the chip's cover with the 'O1' mark on the PCB. Here is a tutorial video for your reference: https://youtu.be/VvYYwxAfBi4

Why does the BT30D Pro get hot when using a 48V power supply?

If you plan to use a 48V power supply, active cooling (such as a fan) is required to ensure stable operation. You can also attach an aluminum heat sink: learn more .

Fosi Audio BT30D Pro 2.1 Channel Bluetooth Amp - Fosi Audio

Fosi Audio BT30D Pro 2.1 Channel Bluetooth Amp

$109.99

156 Bewertungen insgesamt

Features

High-Performance Amplifier
Connect Passive/Powered Speakers, Passive/Powered Subwoofers
Supports SUB frequency, SUB Volume, Master Volume/Bass/Treble Control
Replaceable Knobs: Orange Knob

MODEL: BT30D PRO+32V/5A

BT30D PRO+32V/5A
BT30D PRO+48V/5A

Produktvarianten

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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

This little Amp comes nicely packaged with a solid feel to the case and the controls and connectors.

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.

Product details

Description

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: It 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.
If you plan to use a 48V power supply, active cooling (such as a fan) is required to ensure stable operation.

Specifications

THD: ≤ 0.03%
SNR: ≥ 108dB
Frequency Range: 20Hz - 20kHz (±1 dB)
MAX Power Output: 165W×2+350W
Input: Bluetooth + RCA
Input Sensitivity: ≤ 600mV
Terminating Impedance: 2-8 Ohm
Output: Passive/Active Speakers+Passive/Active Subwoofer
Power Supply: 32V/5A, 48V/5A

(If the back of the BT30D PRO is printed with "DC INPUT" supporting 19~36V, it is not compatible with a 48V power supply. However, if it is printed with "DC INPUT" supporting 24~48V, it can be used with a 48V power supply. Please check the "DC IN" section to confirm its compatibility.)

What‘s in the box？

BT30D PRO Power Amplifier x 1

32V/5A or48V/5A Power Adapter x 1

User’s Manual x 1

Which Product is right for you?

Compare products to find the best one for your needs.

From $109.99

Fosi Audio BT30D Pro 2.1 Channel Bluetooth Amp

Learn more

Type

Bluetooth 2.1 Ch Amp

MAX Power Output

165W ×2+350W@4Ω

Input

Bluetooth, RCA

Output

Speaker Output, Passive Subwoofer Output, Pre-Out

Treble & Bass Control

Yes

THD+N

≤ 0.03%

SNR

≥108dB

Terminating Impedance

2-8Ω

Power Supply

32V/5A, 48V/5A

Amp Chip

TPA3255

From $79.99

Fosi Audio BT20A Pro Bluetooth Stereo Power Amp

Learn more

Type

Bluetooth 2.0 Ch Amp

MAX Power Output

2x 300W@4Ω

Input

Bluetooth, RCA

Output

Speaker Output, Pre-Out

Treble & Bass Control

Yes

THD+N

≤ 0.005%

SNR

≥108dB

Terminating Impedance

2-8Ω

Power Supply

32V/5A, 48V/5A

Amp Chip

TPA3255

From $89.99

Fosi Audio BT30D Bluetooth 2.1 CH Power Amplifier

Learn more

Type

Bluetooth 2.1 Ch Amp

MAX Power Output

50W x2+100W

Input

Bluetooth + RCA

Output

Passive Speakers+Active/Passive Subwoofer

Treble & Bass Control

Yes

THD+N

≤ 0.04%

SNR

≥98dB

Terminating Impedance

2-8Ω

Power Supply

24V/4.5A

Amp Chip

TPA3116 x2

From $109.99

Fosi Audio BT30D Pro 2.1 Channel Bluetooth Amp

Learn more

Type

Bluetooth 2.1 Ch Amp

MAX Power Output

165W ×2+350W@4Ω

Input

Bluetooth, RCA

Output

Speaker Output, Passive Subwoofer Output, Pre-Out

Treble & Bass Control

Yes

THD+N

≤ 0.03%

SNR

≥108dB

Terminating Impedance

2-8Ω

Power Supply

32V/5A, 48V/5A

Amp Chip

TPA3255

From $79.99

Fosi Audio BT20A Pro Bluetooth Stereo Power Amp

Learn more

Type

Bluetooth 2.0 Ch Amp

MAX Power Output

2x 300W@4Ω

Input

Bluetooth, RCA

Output

Speaker Output, Pre-Out

Treble & Bass Control

Yes

THD+N

≤ 0.005%

SNR

≥108dB

Terminating Impedance

2-8Ω

Power Supply

32V/5A, 48V/5A

Amp Chip

TPA3255

From $89.99

Fosi Audio BT30D Bluetooth 2.1 CH Power Amplifier

Learn more

Type

Bluetooth 2.1 Ch Amp

MAX Power Output

50W x2+100W

Input

Bluetooth + RCA

Output

Passive Speakers+Active/Passive Subwoofer

Treble & Bass Control

Yes

THD+N

≤ 0.04%

SNR

≥98dB

Terminating Impedance

2-8Ω

Power Supply

24V/4.5A

Amp Chip

TPA3116 x2

Pleased

I'm very happy with the Fosi BT30D Pro amolifier. It works great with my Klipsch RO 525's and Russound Acclaim 5 subwoofer. I'm running it on the B Zone of main amplifier as well as Android Auto from my phone. My deck sounds fantastic!

Great product and excellent customer support

I've been using the Fosi Audio BT30D Pro for about a month and I'm very happy with it. The sound quality is clear and powerful, and the amplifier has plenty of power for my speakers and subwoofer.

I did have an issue with the original power supply, but Fosi Audio's customer service handled it very well. They arranged a replacement power supply and shipped it to me without any hassle. After replacing the power supply, the amplifier is working normally again.

I'm very satisfied with both the product and the after-sales support. Great sound quality and excellent customer service. Highly recommended!

Awesome and powerful amp

I am more than satisfied with this product. I reviewed a lot of amps, different brands, web and IA research and I finally decided to buy this amp. My setup is formed by a Loxjie D30 DAC in preamp mode, with a WiiM Streamer and TV Sharp. This Loxjie goes directly to my Fosi thru RCA cables. The sound is deep, crystal clear and superb. I don't know if I need to change something in my setup to increase the volumen a little bit, but it is ok of now. I loved this Fosi.

Nice

Top sound quality and power full

excellent product

excellent amp fullfills my expectations, definetlly recomended and for the prize ufff very good in all respects.

5 stars: 116 (74%)
4 stars: 24 (15%)
3 stars: 6 (4%)
2 stars: 2 (1%)
1 star: 8 (5%)

BT30D Pro: the perfect 2.1 Desktop HiFi Solution!

This is my third BT30D Pro. It is a fantastically versatile unit with a crazy amount of power when used with a 48V GaN PSU. This one was used to create a genuinely portable 2.1 system, with a carry handle and speaker-retaining cargo clamps, and an Oilsky M308 DAP.

There are only two improvements needed to this amplifier (and the lesser non-Pro model) -- the addition of a High-Pass Filter with 80Hz and 100Hz switching options.

The second upgrade is a three-way power switch: OFF, RCA, and BT.

If you are looking for Most Bang For The Buck, then the buck stops right here! Buy with confidence - you won't ever regret your purchase.

EXCELENTE!!

Vale mucho la pena este amplificador!!. Es compacto, el sonido es limpio, potente y tiene un buen control de volumen. Pude revivir unos viejos altavoces Technics SB F66A que funcionan excelentes, y hasta le siento mejores bajos que los que recordaba.

Solo recalco el detalle que se calienta un poco con la fuente 48V 5A. Le coloque un pequeño ventilador y va bien. Pienso colocar un subwoofer pasivo en un futuro.

Good product

I am thoroughly impressed by the build quality and the power output of this compact amplifier. It drives both my passive speakers and subwoofer effortlessly, delivering crisp highs and punchy lows. The Bluetooth connection is stable, and having precise control over the sub-bass frequency is a massive bonus for audio enthusiasts."

Excellent sound, Worst heat protection implementation

First of all, I would like to emphasize that I am very satisfied with this unit in terms of sound quality, output power, material construction, size, price, and overall performance. In these aspects, I truly have no complaints.

That said, the implementation of ventilation and heat dissipation by Fosi Audio is highly problematic. The device has no effective ventilation system, as it is essentially a sealed enclosure. Consequently, the heat generated by the internal components—particularly the amplifiers—cannot be adequately dissipated through the aluminum plate, which is the sole element intended for thermal regulation. Moreover, this plate is positioned in the narrowest section of the chassis, further limiting its effectiveness.

As a result, after only 15 to 20 minutes of playback at volumes of 60% or higher, the unit consistently triggers protective power shutdowns. This makes continuous use beyond that timeframe impractical.

A redesign is urgently needed to enable proper passive ventilation without requiring owners to resort to custom modifications to correct such a fundamental flaw.

This is nice!

Wow I love this amp already! I built my own 8” subwoofer and this powers it perfectly. It looks super clean in my setup and doesn’t take up very much space. I will definitely be purchasing more products from Fosi in the future!

Soundboard extreme

Replace a 3216 chip amp with this amazing amp. What a difference. Powers 6 drivers plus 1 sub. Thanks fosi audio.

My entrance to the Fosi world

I originally bought the BT30D Pro for a secondary 2.1 setup, but it slowly became one of the most useful pieces of gear in my entire system.

The subwoofer integration and control flexibility are excellent. In my current 5.1 setup I use it for center/LFE duties and it made balancing the relationship between center channel vocals and multiple subwoofers much easier than with traditional stereo amps.

What surprised me most is how effortless and dynamic it sounds. It has plenty of power, very good bass control and never feels strained, even during long listening sessions at higher volumes.

The pre-out functionality makes it extremely versatile. I ended up using it not just as an amp, but also as a control hub for different amplifier and subwoofer combinations.

For the price, the value is honestly ridiculous.

A nice and compact amplifier.

I use Cambridge Audio SX 50 speakers with SMSL 200 pro DAC with Macbook Air m4 as a streaming device. The size and audio quality of this Amp is perfect for my desktop setup.

Simple and perfect for my patio speakers

I use this amp to power my outdoor speakers mounted in my backyard near the pool. My source is an old Chromecast Audio or Bluetooth. The set up is so simple and just what I needed. It breathed new life into my old speakers and my backyard never sounded better.

BT30D Pro (48v)

This amplifier is powerful and can drive my speakers and subs well. I am impressed by the amount of tone control. My speakers never sounded better. I purchased another BT30D Pro (48v) to use in my other listening space.

All that you ever wanted

If you always an amplifier that can power a subwoofer at this price range and as a bonus you can get a stereo amplifier all in one.
You can bring back to life you old car sound or drive a new pair of speakers you better prepare for a beautiful sound what ever your set is

Very good amplifier, great sound

Use this with KEF speakers, very clear sound. Lots of power with the 48v power supply. Didn't think this much power would come in such a small package. I definitely recommend Fosi!

Very clear clean sound plenty powerful... BUT...

Using them with two Klipsch References bookshelf speakers and they sound amazing. However I am also using an 8" 4ohm passive sub and the sub and the sub range never is able to meet the bookshelf speakers. It can push the sub enough but by the time you hear it the bookshelf speakers are drowning it out. You need to be able to turn the two channels down or you have to use a powered sub. If there is a different option you make that can address this or has a more powerful mono channel let me know and I will upgrade.
Also the form factor and fit are perfect for me. Nice quality stuff.

45 volt 5 amp Hot in many different ways!!!!

Great little device has lots of power, using the sub out to run a buttkicker, the output rating is more like a hundred Watts each on the two channels and 200 Watts on the sub output. If using in Bluetooth mode connected to a TV there is a delay, so the mouth movement doesn't match the sound but for all other Bluetooth audio excellent quality even though there is a slight reduction in volume compared to using the RCA's. Device just get hot and could use some sort of fan or external heat sink even though it's using the aluminum chassis. Occasionally if gets too hot sound kind of just goes away. But but just flip the on and off switch off and on and back up and running maybe just turn it down a hair. Also for your information the main volume controls both audio output after you adjust the sub to your liking level. Also the Bluetooth volume is adjustable say on your source but you will have to set the amp volume to wherever it sounds the best when at max volume on Bluetooth. That's because the volume on the amp dial does not move mechanically.

Allmost perfect

In a 5m x 6m x 3-5(hight)m with a pair of 8 Ohm 65 cm x 32cm x 26cm speakers, on ~66-70% of wolume, it can do a good job. I do not feel weak, even wothout subwoopher, i can adjust the base till it is in balance. I feel the highs amd the mids are great, they have good detaile and are banaced, and again, can be adjusted tu have more/less.. so i am pleased. With subwoopher, the bass is very pleasing, if you place it to a right spot. Very nice to add a bass fequency potmeter👍

Downside is, the OPamps areen't upgradebla, despite the previous BT20 Pro have such a feature. It is "sad but true"
Ui:on bluetooth, if the soud is much more silent then on wired connection, try not a phone but a Bluetooth Player/dac insteed, then i needed only 55-66% to turn that players volume up. For get the same result, my phones vlolume setting nedeed over 70-90%

Fosi Audio BT30D Pro 2.1

Recently I brought Fosi 30D Pro , Its was Nice and amazing sound quality i love the sound clarity of Fosi Audio , There is no words such a Good Stuff for Music lovers

Great Product with Cheap price

I would suggest to by this amazing product, great sound amazing performances

Dein Warenkorb ist leer.

Fosi Audio BT30D Pro 2.1 Channel Bluetooth Amp

Review Videos

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