High quality Mini Digital Amplifier Board Class D 2*3W USB Power PAM8403 Audio Module DC 5V

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-5V
Speaker With:4-8ohms  recommended:4 ohms
Speaker Power :2-8W
Size:20 x 18 x 2mm(L x W x H)
Color:As the pics show
Net weight:2g

Package Contents:
10 x Amplifier Board

TDA7498 Class D 2X100W Dual Channel Audio Stereo Digital Amplifier Board 12v 24v

Description

Features:

High­Power Class D digital amplifier

8­ohm speaker, input voltage 34V DC output power 80W + 80W (dual­channel)

Operating voltage: 15 ~ 34VDC

Efficiency: 90%

Recommended Power supply: 24V voltage output current over 5A (power shortage in power is a major dynamic phenomenon will

appear when the staccato)

Recommended speaker impedance: 8 ohms Best

package include :

1pcs TDA7498 High­Power Class D digital amplifier Board

TDA7293 Dual Parallel 170W Mono BTL Audio Power Amplifier AMP Board Assembled

Specification:

IC board is brand new original authentic，This product is welded, tested good finished board. This circuit is a

channel without a rectifier circuit, if you want stereo, please buy two pieces.

Power supply: 15V AC double to 28V (AC needs rectification filter) or ± 18V dc to 40V. 

Recommeded Power supply: 15V AC double to 28V (AC needs rectification filter) or ± 18V dc to 40V. Recommended dual

35V, 35V transformer attention not double, plus or minus 35V DC (recommended dual 26V / 200W or more
toroidal transformer, the transformer output must be three lines, such as:
26V­0­26V, (referred to as dual 26V) dual DC rectified voltage of about 35V), the transformer output is two
lines or four lines is not possible.
Reminder: the battery can be used! (Must be connected in series battery).
Transformer power: Minimum 200w, multi­channel power is calculated separately to note that the better must
be truly full power transformer
Output Power: Maximum power output 170W, than the rated power, output power and output transformers
and speaker proportional
Load: 6­8 impedance around Europe 100w­150w box is very suitable, we must choose a good speaker
problem
Board dimensions: length 70mm width 35mm height 25mm <height of containing the chip installed height>
Weight: 40g (5g within error).
Audible Noise: None
The board without any noise, the premise is to deal with the ground and the level audio to the noise
Midpoint voltage: less than 5mV
BTL perfect support multiple board connection
Board are pure amplification stage
Board only supports DC input rectifier filter section without a friend in need can additionally choose
We must ensure that the positive and negative at the same time and the positive and negative supply voltage
error can not exceed 1v.
Integrated chip TDA7293 must be insulated from the heat sink a hundred percent.
Package included:

1PC x TDA7293 Dual Parallel 170W Mono Power Amplifier Board Assembled

TPA3116D2 50Wx2+100W 2.1 Channel Digital Subwoofer Amplifier Board 12V-24V Power

 Features:

 Adopts two high quality TPA3116D2 digital amplifier chips.

 Sound quality is very good, high efficiency and amplifying power.

 50W*2+100W  2.1 channels(left/right channel and subwoofer channel), high efficiency and low-heat.

 Powered by DC 12-24V, wide input voltage.

 User can adjust the volume by themselves easily.

 Applicable speaker impedance: 4-8 ohm.

 Just connect the power supply and loudspeaker box, enjoy the pure digital music!

Notice:

 This amplifier board must be powered by DC power(DC12-24V), it's better to use high-performance switch power. Don't use transformer!

Specifications:

 Supply Voltage: DC 12-24V

 Chip: TPA3116*2

 Channel Type: 3 Channels(Left Channel, Right Channel, Subwoofer)

 Output Power: 50W*2 + 100W*1 Subwoofer

 Output Match: 4-8 ohm

 Audio Output: Terminals

 Frequency Response Range: 14-100KHz

 SNR: 100dB

 Switching Frequency: 1.2MHz

 PCB Board Size: 100 * 70 * 30mm / 3.94 * 2.75 * 1.18in (L * W * H)

 Weight: 113g / 3.98oz

 Package Size: 13.5 * 11 * 5cm / 5.31 * 4.33 * 1.97in (L * W * H)

 Package Weight: 178g / 6.3oz

  

Package List:

 1 * 2.1 Channel Audio Amplifier Board

TF card U disk MP3 Format decoder board amplifier decoding audio Player module

Description:

Highlights:

1. Superior sound quality, onboard 2W mono amplifier (5V supply up to 3W) directly connected to the speaker (Recommended with 4? 3W speakers), 3.5mm gold plated headphone jack can connect headphones or external stereo.

2. With MicroUSB power connector, power supply or USB mobile charger powered via phone lines, but also can be 3.7V lithium battery, USB 5V power supply.

3. Support TF card (memory card inside the phone), U disk playback mode.

4. No welding with speaker terminals for easy wiring.

5. Module designed to facilitate modification.

Product Overview:

1. Support MP3 format, the power automatically play when playing red LED status updates.

2. U disk support (tested 32G), TF card (tested 16G) Play mode; TF card power-on default mode, if there is no automatic jump TF card U disk mode, and both devices have installed, you can manually set the playback mode, details key operating instructions.

3. The buttons can be adjusted up and down the track switch, volume + -, pause / play, mode switching, details key operating instructions.

4. Key Settings "singles / Full Song" cycle, the default power cycle the whole song, press "Repeat" button replacement cycle mode

Key Instructions:"Prev / V--" button: "Press" for switching "on a" song, "long press" for "volume Decrease"

"Next / v ++" button: "Press" for switching "next song" Song, "long press" for "incremental volume"

"P / P / Mode" button: "Press" for the "Play / Pause" Switch, "long press" for U disk, TF card "pattern"

"Repeat" button: "Press", for "single / full song" Cycle (no long press function)

Note: a "long press" approximately 2S

2. If you use U disk mode, it is recommended 5V power supply, and some U disk does not support 3.7V power supply.

Product Specifications:

Power range: 3.7 ~ 5.5V

Size: 45mm * 36mm

Exquisite double board design, a large copper, stable and reliable.