3 Channel Digital Subwoofer Amplifier Board The 3 channel digital subwoofer amplifier board runs on two high-quality TPA3116D2 digital amplifier chips. It is powered at a DC supply voltage of 12-24V. The subwoofer amplifier board has very sound quality with great amplifying power. This amplifier board has 3 channels out of which there are two 50W channels and one 100W channel that works with high efficiency and produces low heat. Users can simply connect the power supply and loudspeaker box in order to enjoy pure digital music.   Disclaimer: Please note that this 3-Channel Digital Subwoofer Amplifier Board uses a clone IC designed to offer similar functionality to TPA3116D2 digital amplifier chips. This product has been tested to ensure comparable performance and quality for compatible applications. Key

PAM 8403 Amplifier Module with Knob PAM8403 is a basic 5V input amplifier board that can drive two 3W + 3W stereo speakers. It’s a great option for anyone looking for a Class-D stereo audio amplifier with a tiny footprint. The user can get high-quality audio reproduction from a stereo input using this amplifier. It also has a unique function in that it can drive speakers directly from the output. . It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filter-less architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications.  This PAM8403 Amplifier module differs from the conventional PAM8403 Amplifier board in this module it allows us to have more control over the output provided by the IC. By control, we mean that this amplifier module board comes with a knob that allows you to adjust the output. The PAM8403 IC provides high-definition sound quality and highlights the benefits of digital chips. The circuit uses the most reasonable peripheral arrangement, and the power supply filter is increased to 470uf. read more : Types of Amplifiers with their Workings Note:  Please make sure the power supply is not more than 5.5V and please don't do reverse polarity for "+" and "-", or else, it will burn the board. Applications: Bluetooth Stereo Audio hands free / headsets In robots that speak or generate sounds to indicate activities Portable Speakers  LCD Monitors / TV Projectors Arduino or Raspberry Pi Game Machines Speaker Phones Package Includes : 1 x PAM8403 Mini 5V Digital Amplifier Module with Knob Specifications: Model  GF1002 Input voltage 2.5--5.5V Output 3W*2 Power filter 470uF Size 29.5 x 20.2 x 15mm (not including the extended bar)

5V DC Mini Class D Pam8403 USB Power Amplifier Board The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of Class-AB cousins. The PAM8403 audio amplifier can extend the battery life, which makes it well-suited for portable applications. The board uses the typical circuit design of PAM8403, using MICRO USB power supply (reserved wire power interface), it is easy to use a universal mobile phone charger for its power supply, resistance devices are standardized patch technology, simple and stable. Applications: LCD Monitors / TV Projectors Notebook Computers Portable Speakers Portable DVD Players, Game Machines Cellular Phones/Speaker Phones Also check the PAM8610 Digital Amplifier Board available on Iotcart. It is a 15W per channel stereo Class-D audio amplifier with DC Volume Control. The working mode is Class D (PWM modulation type), and it features a switch function that, when shorted, will close the amplifier. Package Includes: 1 x Pam8403 USB Power Amplifier Board Specifications: Supply Voltage  6.0 V Input Voltage -0.3 to VDD +0.3V Operation Temperature Range -40 to +85 Maximum Junction Temperature  150 Dimension 21x21x2mm Weight 2g

XH-M120 PAM8610 Amplifier Board The PAM8610 amplifier board is an all-new efficient amplifier board equipped with a 15W dual channel class D audio amplifier. This XH-M120 PAM8610 amplifier board is much more efficient and performs better than the Class AB amplifier boards. This Pam8610 audio amplifier board helps save cost and PCB area by eliminating the need for a low-pass output filter. It also can extend the battery life and is ideal for portable applications.

PAM8610 Digital Amplifier Board This amplifier plate adopts the official standard circuit design. Chip selection used is the United States' imported Long Ding micro class D power amplifier chip. The PAM 8610 is a 15W (per channel) stereo Class-D audio amplifier with DC Volume Control which offers low THD+N (0.1%), low EMI, and good PSRR thus high-quality sound reproduction. The 32 steps DC volume control has a +32dB to -75dB range. The PAM 8610 runs on a 7V to 15V supply at a much higher efficiency than competitors’ ICs. The PAM8610 amplifier only requires very few external components, significantly saving cost and board space. This 2x15W Two-Channel Stereo Class-D Amplifier is available in a 40pin QFN 6 x 6 mm package. The power amplifier has a high efficiency, large power, in the case of 12V power supply and can provide an output 10W + 10W power.Also has overheat and over-current protection functions. PAM8610 Digital Amplifier Board Pinouts: Note: The power supply voltage limit is 16.5V, do not use more than this voltage. The power supply is recommended for 12v, 3A power supply filter better. 4-8 inch stereo speakers recommended.  Do not short-circuit the audio output to each other or shorted to ground. Carefully check before electricity, ensure the wiring is correct before electricity. Applications: Portable Audio Player Mini Speaker Control System Music Systems Radio or TV Power Amplifier Package Includes: 1 x PAM8610 Digital Amplifier Board Specifications: Supply Voltage  6-15V DC Output Power 10W X 2 Working Mode  Class D (PWM modulation type) Dimensions 30.5  x 25.5 x 2.6 Weight (gm) 5

DTMF Decoder - GL Decodes DTMF audio signal to 4 bit binary TTL level output with LED indication. It also indicates outputs with LED. Can be used directly with microcontrollers to develop various DTMF related applications like remote monitoring, remote control, Caller ID, Auto Dialer, Remote Triggering etc. read more : DTMF DECODER: MADE IN INDIA Applications: Remote Control systems. Caller ID applications. FM receiver-based remote control. Remote control using a Mobile phone. Package includes: 1 x DTMF Decoder - GL Specifications: Operating Voltage 5/12V (DC/AC) Operating Current 100 mA. Weight 10g

TDA 2030A Audio power Amplifier Module Want to increase the audio output capability of your project? Well, then this is the perfect module for you. This module is based on the famous TDA2030A Audio Amplifier Module which is capable of 18-watt power output with very low harmonic distortion. This TDA2030A audio amplifier circuit, often using V-5-pin single in-line plastic package structure. Also check the NE555 Multi-Channel Waveform Generator Module available on Iotcart. Priced at Rs. 465 with an 18% discount from the original Rs. 568, the module operates on a DC input of 6-12V. It features a color ring resistor with values of 1kΩ, 1mΩ, 4.7kΩ, 10kΩ, 15kΩ, and 100kΩ. The module can generate square waves, sawtooth waves, triangle waves, and sine waves, with the waveform output selected by a jumper. Also check TDA8932 digital power amplifier board. It is a compact and efficient board that can deliver 35W of mono audio. It is suitable for a variety of audio applications, including active speakers, DIY projects, and electro-acoustic projects. Package includes: 1 x TDA 2030A Audio power Amplifier Module Specifications: Amplifier IC TDA2030A Operating Voltage (VDC) 6-12 Audio Output 18W max. Dimensions 32x22x23mm Weight 10g

NE555 Multi-Channel Waveform Generator Module NE555 multi-channel waveform generator can generate a square wave, sawtooth wave, triangle wave, sine wave. A waveform output is selected by a jumper, and the circuit is simple and convenient to operate. Package Includes: 1 x NE555 Multi-Channel Waveform Generator Module Specifications: Input dc6~12v Module Type  NE555 multi-channel Dimensions  51X 44x 5mm Weight  5 grams

PAM8403 Digital Power Amplifier The PAM8403 5V Two-channel Stereo is a 3W+3W, class-D audio amplifier, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. You can power the pam8403 amplifier board 5v using your mobile charger or can be by a computer USB plug. You can use two speakers 3/5 watts on both sides L and R. And connect the Audio cord to the LTR portion.  With the same number of external components, the efficiency of the PAM 8403 is much better than that of its Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications.  Note: Input audio should be via shielded wire for best performance. Use a proper filtered power supply with good filter capacitors. Take care not to short speaker wires else IC will get damaged. Make sure power supply never exceeds 5.5V else IC will get damaged. Use a regulated power supply. Applications: LCD Monitors / TV Projectors  Notebook Computers Portable Speakers  Portable DVD Players, Game Machines  Cellular Phones/Speaker Phones Also check the 5V DC Mini Class D Pam8403 USB Power Amplifier Board available on Iotcart. It is a 3W, class-D audio amplifier with low Total Harmonic Distortion plus Noise (THD+N), enabling high-quality sound reproduction. The filterless architecture allows it to drive the speaker directly, eliminating the need for low-pass output filters and reducing system cost and PCB area. The amplifier operates on a 5V power supply and is designed for Bluetooth audio receiver module dedicated interfaces. Package Includes: 1 x PAM8403 Digital Power Amplifier Specifications: Model  PAM8403 Operating Voltage (VDC) 2.5 ~ 5.5V Current Handling Capacity (A) 0.08 Load Can direct drive 4 or 8-ohm small speakers. Dimensions  21 x 18 x 3(mm) Weight  5 grams