$99.99

Fosi Audio BT20A Pro 300W Bluetooth 5.0 Dual Channel Amplifier

Grey, BT20A PRO

Price data checked 5 days ago

View at Amazon

We'll watch every seller, every day. One email when your price arrives.

It has never been this cheap. We have no record of a lower price.

£100 today · cheaper than every other day in the last 3 months

NEW HERE?

Amazon shows you one price. We show you all of them.

Tosheroon watches Amazon prices so you don't have to. Every product on Amazon has a price history — we make it visible. Set the price you'd actually pay, and we'll email you the second it gets there. No app, no account, one email.

WHAT'S ON THIS PAGE

↓ Price chart
when this has been cheap or pricey
↓ Forecast
where the price is heading next
↓ Statistics
all-time high & low, recent range
↑ Price alert
name your number, we'll email you

Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 86 days • 86 data points (No recent data available)

Historical
Generating forecast...
£99.99 £94.99 £96.99 £98.99 £100.99 £102.99 £104.99 16 March 2026 06 April 2026 27 April 2026 18 May 2026 09 June 2026

Price Distribution

Price distribution over 86 days • 1 price levels

Days at Price
86 days 0 22 43 65 86 $100 Days at Price

Price Analysis

Most common price: $100 (86 days, 100.0%)

Price range: $100 - $100

Price levels: 1 different prices over 86 days

Description

Bring cinema-level sound to any room or patio with the Fosi Audio BT20A Pro. With 300 W per channel, this mini Class D receiver drives passive speakers loudly and cleanly, so your movies, games and playlists fill the space without distortion. At the heart of the amp is a TI TPA3255 chip that uses a feedback design and a low idle loss under 2.5 W, delivering high efficiency and cool operation even during long sessions. The built-in NE5532 op-amps are replaceable, allowing you to swap in premium models such as LME49720HA or OPA2604AP for a sound signature that matches your listening preference. A signal-to-noise ratio of 108 dB and total harmonic distortion of 0.005% keep every instrument and vocal crystal clear. Wireless streaming is fast and stable thanks to Bluetooth 5.0, and a single press clears the pairing so you can connect a new device in seconds. On-board bass and treble controls let you fine-tune the response for any genre, while the compact size fits neatly on a shelf or outdoor table. Experience powerful, customized audio wherever you gather.

Key Features

Delivers 300 W per channel so your passive speakers produce powerful, room-filling sound whether you're inside or enjoying music outdoors.

The TI TPA3255 chip uses a feedback design and low-idle loss under 2.5 W, giving high efficiency and cooler operation during long listening sessions.

Swap the built-in NE5532 Op-Amps for models like LME49720HA, MUSES02, OPA2604AP, OPA2134PA, LM4562, or NJM4556AD to tailor the amp's tonal character to your taste.

Enjoy crystal-clear audio thanks to a signal-to-noise ratio of at least 108 dB and total harmonic distortion of 0.005% or lower, preserving every detail.

Bluetooth 5.0 delivers fast, reliable wireless streaming, and a simple press clears the pairing so you can switch sources in seconds.

Product Specifications

Colour
Grey
Domain
Amazon US
Listed Since
22 December 2018

Similar Products You Might Like

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
97% match

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

Fosi Audio

$79.99 12 Feb 2026
ZK-1002T Bluetooth Amplifier Board 2.0CH 100W*2 Mini Audio AMP with Treble and Bass Control, BT and AUX Inputs, DC 9-24V Stereo AMP Module for Home Speakers, Update Version APP Control
97% match

ZK-1002T Bluetooth Amplifier Board 2.0CH 100W*2 Mini Audio AMP with Treble and Bass Control, BT and AUX Inputs, DC 9-24V Stereo AMP Module for Home Speakers, Update Version APP Control

ARRAROWN

$19.98 31 Jan 2026
Sunbuck Mini Amplifier, 2 Channel Stereo Amplifier, Power Amplifier Max 300Wx2 Output, Bluetooth Amplifier for Home Speakers, Stereo Receiver with RCA/USB/FM/AUX, Mini Amplifier for Speakers, AS-22
97% match

Sunbuck Mini Amplifier, 2 Channel Stereo Amplifier, Power Amplifier Max 300Wx2 Output, Bluetooth Amplifier for Home Speakers, Stereo Receiver with RCA/USB/FM/AUX, Mini Amplifier for Speakers, AS-22

Sunbuck

$34.99 11 Feb 2026
AIYIMA A07 Premium TPA3255 Power Amplifier 300Wx2 HiFi Class D Amp Mini 2 Channel Stereo Amplifier with Pre-Out for Desktop Bookshelf Speaker Home Audio System & DC32V 5A Power Adapter
97% match

AIYIMA A07 Premium TPA3255 Power Amplifier 300Wx2 HiFi Class D Amp Mini 2 Channel Stereo Amplifier with Pre-Out for Desktop Bookshelf Speaker Home Audio System & DC32V 5A Power Adapter

AIYIMA

$79.99 05 Jun 2026
Romicta 2 Channel Bluetooth 5.0 Stereo Amplifier, USB/SD/FM, Class D Home Audio Receiver for Home Theater & Karaoke, Includes Remote & Power Adapter (2 Channel)
97% match

Romicta 2 Channel Bluetooth 5.0 Stereo Amplifier, USB/SD/FM, Class D Home Audio Receiver for Home Theater & Karaoke, Includes Remote & Power Adapter (2 Channel)

Romicta

Out of Stock 11 Feb 2026
Fosi Audio V1.0G 2 Channel Class D Mini Stereo Amplifier for Home Speakers TPA3116 50W x 2 with Power Supply
97% match

Fosi Audio V1.0G 2 Channel Class D Mini Stereo Amplifier for Home Speakers TPA3116 50W x 2 with Power Supply

Fosi Audio

$39.99 11 Feb 2026
S600X-W Power Amplifier Board Bluetooth5.2 TPA3255 Chip with Subwoofer 2.1 Channel 300W×2+600W (S600X-W)
97% match

S600X-W Power Amplifier Board Bluetooth5.2 TPA3255 Chip with Subwoofer 2.1 Channel 300W×2+600W (S600X-W)

DAJUNGUO

$69.99 16 Feb 2026
ZK-HT21 TDA7498E Bluetooth Amplifier Board 160W×2+220W Subwoofer 2.1 Channel Audio Receiver Power Amplifier Module with Treble and Bass Control for DIY Speakers
97% match

ZK-HT21 TDA7498E Bluetooth Amplifier Board 160W×2+220W Subwoofer 2.1 Channel Audio Receiver Power Amplifier Module with Treble and Bass Control for DIY Speakers

Hosyond

$28.99 27 Feb 2026
Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply
97% match

Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply

Fosi Audio

$87.99 06 Feb 2026
Donner 4-Channel Receiver - 1000W Peak, Bluetooth 5.0, USB, FM, Mic
97% match

Donner 4-Channel Receiver - 1000W Peak, Bluetooth 5.0, USB, FM, Mic

Donner

$149.99 17 Feb 2026