The DA-3700 is a 200W digital karaoke mixing amplifier that is great for both home use as well small to medium gigs. You can connect two stereo audio sources and two microphones. Both music and microphone channels have 3-band EQ control for custom sound. Singers will love the digital echo that includes high, low, repeat and delay controls. Just in case you want to add more effects, there are effect loop and mic insert jacks on the rear panel. A handy +/- 4 step digital key controller is onboard to change the key of the music so a song will never be out of your vocal range. The DA-3700 combines home entertainment capabilities with professional features providing a powerful, yet easy to use system for any vocal setup.