RDIoT Demo

DC 5V Amplifier Board 3W+3W Class D (PAM8403) [B122]

https://www.youtube.com/watch?v=ezqbtpKRAVg

* Specs

Features

Can use the computer USB port 5V power supply

or using a mobile phone charger USB port 5V power supply

battery power can also be used

high efficiency:90%

can provide 3W (left channel) +3 W (right channel) output power in the 4Ω load and 5V power supply conditions

A class, B class amplifier such efficiency is only about 30%

D class amplifier is highly respected today

D class amplifier efficiency is extremely high, not because of temperature affect the sound quality

but do not add heat sink and take less space

noise canceling circuit was built in the amplifier board

power on / off without pop noise

module has a short-circuit current protection and over-temperature protection

Application:

LCD TVs, monitors,

Laptop

Portable Speakers

Portable DVD players, game consoles

Phone / speakerphone

Specifications

Operating voltage: 2.5V-5.5V

Speaker With:4-8ohms  recommended:4 ohms

Speaker Power :2-8W

Size:21 x 18 x 3.4mm(L x W x H)

Color:As the pics show

Net weight:1g

5V Digital Amplifier Module 5W+5W (PAM8406) [D064]

https://www.youtube.com/watch?v=WZmiGqzH3OM

* Specs

Features:

Excellent performance in noise suppression. You can hardly hear any noise without connecting with input audio.

Two-channel stereo, high output power, super acoustic quality and adjustable volume. When powered by 5V power supply, it can output 5W + 5W power and drive little speakers directly(4Ω, 8Ω).

Dual-panel wiring perfectly solves the problems of ground potential balance and crosstalk between channels caused by wiring.

Small in size, it is convenient to put it in many digital products.

Can be powered by USB directly.

Specifications:

Material: PCB

Rated Voltage: 2.5-5V

Max. Voltage: 5.5V

Item Size: 2.5 * 2.2 * 1cm / 1 * 0.9 * 0.4in

Item Weight: 2g / 0.1oz

Package Size: 7.5 * 6 * 1cm / 3 * 2.4 * 0.4in

Package Weight: 3g / 0.1oz

Package List:

1 * Digital Amplifier Module

TDA7297 Audio Amplifier Module DC6-18V 10-50W (TDA7297) [B155]

https://www.youtube.com/watch?v=S1Y_CPIwBj8

* Specs

Descirption:

100% brand new and high quality

Working voltage: 6 to 18V

The Board Size: 4.5x 3.3x 2.7cm

The onboard TDA7297 audio power amplifier chip, double channel 15W+15W,

speaker for European 4-8 10-50W use

Main pin has led chip, convenient external control device, the onboard

5.08 (mm) distance between two p terminal 2 road, around a track connection

output respectively

The onboard dial potentiometer, output size can adjust the volume

Support DC, terminal blocks, row needles 3 power input mode, the default

for the DC, working voltage: 6 to 18 v

Package includes:

1 x DC 6 to 18V TDA7297 Power Amplifier Module