MPA-80SMD
Small PCB with Great Power
Amazing power amplifier
You're gonna love this Amplifier!
Bipolar Class AB Transistor Power Amplifier PCB assembled and tested
Power Amplifier with Very High and Good Performance
Do your Own Home/PA/Guitar Amplifier
Perfect solution for most Small DIY aluminium Case that sale at eBay
Very Small PCB (70mm*47mm) The Ultimate solution for Multi Channel Amplifier
On Board DC Offset and Bias Calibration Trimer
 High quality and reliability Components & FR4 1.6MM PCB
Working Voltage: +/- 30V VDC TO MAX. +/- 50 VDC 
PCB Size: 70mm*47mm double-sided HAL,FR4 1.6MM
The recommended transformer for this amplifier is:
 2X36VAC 4A 300VA (For 8Ω Stereo Version)
2X30VAC 5A 300VA (For 4-8Ω Stereo Version)

Specification:

RMS continuous power

140 Watts driven into a 4Ω load (tested with 2X40V DC Power Supply)

90 Watts driven into a 8Ω load (tested with 2X50V DC Power Supply) 

Load: 4-8Ω

Signal-to-Noise Ratio: >100dB A-weighted

Frequency Response: 20Hz to 20kHz ±0.5dB

Bandwidth: 20Hz to 100kHz -3dB

Input Impedance: 10k ohms

Applications: DIY Home/DJ/PA Power Amplifier, Home/DJ/PA Subwoofer Amplifier