Hobby Audio

2 inch 8 ohm Miniature Speaker
50mm dia with paper cone & ferrite magnet. 240mW 8 ohms

2.5 inch 8 ohm Miniature Speaker
66mm dia)with paper cone & ferrite magnet. 300mW 8 ohms

36mm 4 ohm Miniature Speaker

With polyurethane edge & ferrite magnet, 3W 4 ohms
20mm Height

Active buzzer module for Arduino and other microcontroller projects

Bluetooth Stereo HiFi Amplifier Module

Class D miniature Bluetooth amplifier module that offers low THD+N which allows it to achieve high quality sound reproduction.
The volume can be adjusted by holding the on-board switches lablled "+" and "-".  

Specifications:
Output power: 5W Max x 2
Input voltage: 5V DC
SNR: 80dB @ 1kHz
THD + N: 0.15% @ 1kHz, 1W 
Size: 45mm x 42mm x 25mm
Connections: 2 Pin JST XH x 3

Bluetooth Stereo HiFi Receiver Module

USB Powered Bluetooth receiver module with stereo 3.5mm jack output. Can also be powered by a battery (3.7V - 5V).

Specifications:
Output: 3.5mm stereo jack OR SMD solder pads
Power Input: 3.7V - 5V
SNR: 90dB
THD + N: -70dB
Crosstalk: -86dB
Supported control profiles: A2DP, AVCTP, AVDTP, AVRCP, HFP

Bluetooth Stereo HiFi Receiver Module

USB Powered Bluetooth receiver module with stereo 3.5mm jack output. Can also be powered by a battery (3.7V - 5V).

Specifications:
Output: 3.5mm stereo jack OR SMD solder pads
Power Input: 3.7V - 5V
SNR: 90dB
THD + N: -70dB
Crosstalk: -86dB
Supported control profiles: A2DP, AVCTP, AVDTP, AVRCP, HFP

Mono HiFi Amplifier Module

Class D miniature amplifier module that offers low THD+N which allows it to achieve high quality sound reproduction. 

Specifications:
Output power: 3W Max
Input voltage: 5V DC
SNR: >=95dB
Size: 25mm x 15mm

Passive buzzer module for Arduino and other microcontroller projects

Stereo HiFi Amplifier Module

This powerful HiFi amplifier module uses the Texas Instruments TPA3116D2 amplifier IC which delivers an incredible 120W (max.) per channel. The module has on-board volume control for each channel and can be easily adjusted using a screwdriver. 

A 30mm JST lead is included for the input signal and 2 screw terminal connectors for the output signal.

This module can be powered using our 15V DC power supplies, or any power supply between 12-26V DC with adequate power rating.

Specifications:
Output power: 120W Max x 2 @ 24VDC, 50W Max x 2 @ 12VDC
Input voltage: 12-26V DC
SNR: 100dB
Size: 92mm x 68mm x 16mm
Connections: 3 Pin JST XH (input), 2 pin screw terminals x 3 (power, out L, out R)

Stereo HiFi Amplifier Module

Class D miniature amplifier module that offers low THD+N which allows it to achieve high quality sound reproduction. This module has a rotary potentiometer for volume control. 

Specifications:
Output power: 3W Max x 2
Input voltage: 5V DC
SNR: 80dB @ 1kHz
THD + N: 0.15% @ 1kHz, 1W 
Size: 29.5mm x 20.2mm x 15mm

Stereo Preamplifier Module with Tone Control

NE5532-based stereo tone control board. Featuring volume, bass, mid and treble control and low total harmonic distotion (THD + N = 0.01%) for a clear and accurate sound reproduction. Please see the detailed images for the wiring diagram.


This module includes 3 JST fly leads for input, output and power.

Specifications:
Supply Voltage: 12-24V DC
THD + N: <0.01%
Controls: Volume, Bass, Midrange, Treble
Connectors: 3-pin JST XH x 2 (Input, Output), 2-pin JST XH x 1 (Power Input)

Subwoofer Low Pass Filter/Preamplifier Module

NE5532-based subwoofer low pass filter and preamplifier board. Works on 10-24V DC with line input and features volume and frequency controls. 

Please note: this is a preamplifier board and will not drive a passive subwoofer directly. 

Specifications:
Supply Voltage: 12-24V DC
Frequency Range: 22-300Hz
PCB Dimensions: 78 x 32mm
Audio Input: Stereo/Mono via screw terminals
 

USB Sound Card

Plug-and-play USB soundcard with 3.5mm TRS input/output. Useful for PCs that do not have headphone/3.5mm output.

 

IC bucket brigade analog delay line by Coolaudio. Replaces MN3205.

Features:

• Variable delay of audio signals: 20.48 ms ~ 204.8 ms. 
• Wide power supply voltage: 4 ~ 8 V.
• No insertion noise: Li = 0 dB typ. 
• Wide dynamic range: S/N = 60 dB. 
• N Channel silicon gate process.

Datasheet