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 streaming

🔊100W x 2 powerful output

🎚️Smooth bass & treble tuning

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Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎵 Elevate your sound game — because your space deserves more than just noise.

PLUG PLAY SIMPLICITY - Quick setup with one-touch power switch and RCA inputs ensures you’re ready to impress in minutes.
TAILOR YOUR SOUNDSCAPE - Fine-tune bass and treble controls for a personalized audio experience that fits your vibe and space.
COMPACT STYLISH DESIGN - Sleek all-black, durable Class D amplifier fits seamlessly into any modern home or office setup.
UNLEASH ROOM FILLING POWER - 100 watts per channel drives multiple passive speakers with crystal-clear clarity and minimal distortion (<0.04% THD).
EFFORTLESS WIRELESS CONNECTIVITY - Instant Bluetooth pairing lets you stream your favorite playlists with zero dropouts or delays.

The Fosi Audio BT20A is a compact, entry-level Class D Bluetooth amplifier delivering 100 watts per channel with ultra-low distortion and high signal-to-noise ratio. Designed for home or small venues, it supports 2-8 ohm passive speakers and offers seamless Bluetooth and RCA connectivity. Its smooth bass and treble controls allow precise sound customization, all wrapped in a sleek, durable all-black chassis. Perfect for millennials seeking powerful, stylish, and easy-to-use audio gear that fits any modern lifestyle.

Specifications

Asin	B07BQC7GNL
Best Sellers Rank	#2,367 in Electronics (See Top 100 in Electronics) #4 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 (9,648) 4.5 out of 5 stars
Item Type Name	Bluetooth Amplifier
Item Weight	567 Grams
Manufacturer	Fosi Audio
Mfr Part Number	BT20A
Model Number	BT20A
Unit Count	1.0 Count
Warranty Description	24-month manufacturer

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$282.59

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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