How do I switch between RCA and Bluetooth on the BT20A?

Bluetooth takes priority over RCA. To switch to RCA, restart the device or disconnect Bluetooth.

What is the position for flat frequency response on the amplifier?

The middle position (12 o’clock) provides a flat frequency response.

What type of DC plug do I need for the BT20A’s power supply?

The DC barrel connector dimensions are 5.5*2.5mm.

What's the upgraded version of the BT20A amp, and what accessories come with it?

-If you're seeking the upgraded version of the BT20A, please consider the BT20A Pro amp.

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BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker

Product ID: 62378448

Details

Item dimensions L x W x H
5.2 x 3.54 x
Manufacturer
Fosi Audio
Maximum Supply Voltage
24 Volts
Minimum Supply Voltage
12 Volts (DC)
Voltage
230 Volts

📶Seamless Bluetooth 5.0 streaming

🔊200W max output power

🖤Compact all-black Class D design

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Description

🎶 Small Amp, Big Vibes: Elevate Your Sound Game Anywhere

PLUG PLAY SIMPLICITY - Intuitive one-touch power and easy bass/treble controls make tuning your sound a breeze—no tech degree required.
POWER THAT PACKS A PUNCH - Delivers a robust 100Wx2 stereo output to energize any passive speaker setup, from bookshelf to garage.
SLEEK MINIMALISM MEETS DURABILITY - All-black, one-piece Class D chassis blends into any modern workspace or living area while ensuring longevity.
WIRELESS FREEDOM NO STRINGS ATTACHED - Effortlessly stream your favorite playlists with stable, low-latency Bluetooth connectivity.
VERSATILE PLACEMENT ULTIMATE FLEXIBILITY - Compact footprint fits seamlessly in offices, patios, or small venues—wherever your vibe demands premium sound.

The Fosi Audio BT20A is a compact yet powerful Class D Bluetooth stereo amplifier delivering 200W max output (100Wx2 channels). Designed for passive speakers, it offers seamless Bluetooth streaming, simple bass/treble tuning, and a sleek all-black chassis that fits effortlessly into any space. Ideal for home, office, or outdoor use, it combines high performance with minimalist style and easy setup, backed by a 24-month warranty and stellar customer support.

Specifications

ASIN	B07BQC7GNL
Best Sellers Rank	#3,293 in Electronics ( See Top 100 in Electronics ) #6 in Audio Component Amplifiers
Brand	Fosi Audio
Built-In Media	Fosi Audio BT20A Amplifier x1, 24V 4.5A Power Supply x1, User Manual x1
Customer Reviews	4.5 4.5 out of 5 stars (9,769)
Item Type Name	Bluetooth Amplifier
Item Weight	567 g
Manufacturer	Fosi Audio
Mfr Part Number	BT20A
Model Number	BT20A
Number of Items	1
Unit Count	1 Count
Warranty Description	24-month manufacturer

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121876CFA

Duties & taxes included

In stock

Sold byAmazon MaliDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mali.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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