MRC-A120
This Sale is for One PCB For Stereo You Need 2 PCB
Bipolar DC Quasi complementary HIFI High Quality Power Amplifier 
The great RCA 70's Design With special Today Audio Semiconductors
 High quality and reliability FR4 1.6MM PCB 
Excellent performance Amplifier
This item is PCB with all components assembled ready to use. only need Heatsink and Power Supply
Easy and simple to connect. 
DC Working Voltage: +/- 40V Vdc TO MAX. +/- 55 Vdc 
Power Out: 100W @ 8Ohm [+/-55 Vdc] OR 135W @ 4Ohm [+/-50 Vdc]
PCB Size: 100mm*73mm double-sided Red HAL,FR4 1.6MM
The recommended transformer for this amplifier is:
4 Ohm Stereo version: 2X30Vac/5A (300VA)
8 Ohm Stereo version: 2X40Vac/4A (300VA)

Specification:

RMS continuous power:

100 W Into 8Ω @ 2X55 Vdc

150 W Into 4Ω @ 2X55 Vdc

135 Watts driven into a 4Ω load (tested with 2X50V DC Power Supply)

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

ֵ% 0.05 :Total Harmonic Distortion 

Signal-to-Noise Ratio: >104dB A-weighted

Frequency Response: 20Hz to 20kHz 

Bandwidth: 5Hz to 50kHz -1dB

Input sensitivity: 900mV For Max. Power Output

Input impedance: 18KΩ

Load impedance: 4Ω-8Ω

DC Offset: < 20mv

Applications: DIY HI-FI Home/Car Power Amplifier, HI-FI Home/Car Subwoofer Amplifier