Quality speakers, and a good amplifier make songs sound like the original artists singing live. My speakers are USA made Peavey Impulse 1012's, rated at 500W RMS each, and driven by a Peavey PV-1500 1000W RMS stereo power amplifier. They produce crystal clear sound that will cope with audiences of up to 150 people. Matching Peavey bass bins can be added so as to cope with a greater number of people, the system being driven by 2 amplifiers, each providing 1000W RMS of power.
My fondness for Peavey equipment extends to my choice of mixers, I have many, but my favourite is my PV-10 usb mixer.

To enhance the mood I use enough disco lighting to project colourful patterns on the ceiling, walls and dance floor of a very large hall.
My lighting packages consist of a suitable combination chosen from 2 DMX controlled Acme Mirrage LED's, 2 DMX controlled American DJ Quad Gem LED's, an American DJ Aggressor Tri LED, an NJD Cross-X-4, 2 DMX controlled NJD 250w Datamoons, a Kam LED Mushroom, 2 Star Cluster (Red/Green) Lasers, an Equinox Atria Reloaded Laser (Red/Green/Blue), and a Equinox Ursa Laser (Red/Green/Yellow).
I do not use smoke/haze unless requested and also require permission from the venue management.

The photographs below show some of my equipment.

I use two Shure SM58 handheld vocal microphones, these are tough, and good sounding, which has made them the professionals choice.
My rig also includes a Trantec S4.4 Handheld UHF Radio Microphone System, and a flat screen TFT monitor from which the karaoke song lyrics are read.