2.1 Heavy Amplifier For Home Use 

Matrix 3990 Cabinet
30-0-30 10Amps HD transformer
Maharaja 4191 STK Module Stereo board
Ultra Digital 4 Transistor Mono board
ATC Bass treble
Winner Matrix Sub pre
Ultra Digital Speaker Protection
1510 Diode
10000MFD 63 Volt samwha capacitors
Pagaria usb board
RU-vid channel Name: Digital Isai Tech
Shop Name: Annamalaiyar Electricals and Electronics
Address: 324, Pethikuppam,
Gummidipoondi - 601201.
WhatsApp Number - 9789312660