Martin Ranger MA2500DSP 1500W Professional Karaoke Amplifier Bluetooth, USB/SD MP3Player with New Built-in DSP Effect Digital Processor

Built-in optical output allows you to connect to smart TVs LATEST DIGITAL TECHNOLOGY WITH DSP SOUND PROING TO SOUND LIKE A PRO - Convenient 4-band DSP effect digital processor (X-bass, high, medium, low) with high and low frequency controls 11-step 32-bit digital key controller: Digital key controls allow you to lower or raise the sound key of the source music to suit the vocal range of the person to sing. You can also reset the key to its original state ROTATING CONTROLS - It has a front panel rotating adjustable control center that allows you to control the volume, balance and range of your microphones and the echo and tone of your music. It also has an audio master volume and microphone master volume control WORRY-FREE PURCHASE - With this MA2500DSP we are confident in the quality of our product, therefore, we offer a 30-day money back guarantee with no questions asked Two Av-Art DM-909 Dynamic Microphones (Made in Taiwan) with 20-foot cable and stand ($250.00 value)