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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Fosi Audio 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 streaming

🔊200W max output power

🎛️Smooth bass & treble controls

¥29384

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Description

🎵 Elevate your audio game—because your space deserves sound that speaks volumes

STREAM WITHOUT LIMITS - Bluetooth connectivity ensures flawless, delay-free music from any device
PLUG PLAY SIMPLICITY - Effortless setup with one-touch power and intuitive controls—no tech degree needed
TAILOR YOUR SOUNDSCAPE - Adjust bass and treble to craft the perfect vibe for every playlist and mood
COMPACT DESIGN BIG IMPACT - Sleek all-black Class D amp fits stylishly on any shelf or workspace
POWER YOUR SPACE WITH 200 W PUNCH - Dual 100Wx2 channels deliver room-filling sound for home or small venues

The Fosi Audio BT20A is a compact yet powerful Class D Bluetooth stereo amplifier delivering 200W total output (100Wx2 channels). Designed for easy setup and versatile use, it supports passive speakers in various environments—from home to garage—with seamless Bluetooth streaming and customizable bass and treble controls. Its sleek all-black design complements modern decor while providing durable, high-quality sound performance backed by a 24-month warranty.

Specifications

ASIN	B07BQC7GNL
Best Sellers Rank	#2,708 in Electronics ( See Top 100 in Electronics ) #3 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 (9,745)
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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¥29384

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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