Amp up your stereo system setup with these 4 American Audio MKII DB Sound Volume Display Devices. This device lets you monitor your decibels with a little bit of flare. The system transitions from green to amber and red while taking in your sound volume so you can check your decibel levels by watching the colors change. And if you want to change up the look of your monitor you just need to switch it from bar to dot mode! Entertain your friends family and fans with the American Audio MKII DB Sound Volume Display Device.