Electronics from Lyngdorf is an excellent set for home theater.
In the scene there are:
The Lyngdorf TDAI-2170 Digital Amplifier comes with a microphone for adjusting the sound in relation to the configuration of your room.
Universal digital stereo power amplifier SDA-2400
CD player Lyngdorf CD 2
Lyngdorf Audio MH-2 wall mounts
Powerful subwoofer Lyngdorf BW-2

In the archive, a scene with customized corona renderer materials

manufacturer's website: http://lyngdorf.com/ 

Previews are made in 3ds Max 2015 using Corona renderer