We are proud to introduce to you, the world's first Vocal Mixing Amplifier with built-in Dolby AC-3 EX and DTS-ES Digital Home Theater Decoders. Offering cinema-like 6.1 channel output and powerful 24-bit DSP processing, you can experience cinema quality sound right in your own living room. The DTX-9900K has a full array of digital and analog audio/video jacks, system integration with high-end players, TV's and speaker systems is easy and worry-free. A full compliment of vocal features abound, like customizable Digital Echo, Digital Key Control and multiple DSP vocal effects (including several cool vocal Reverb modes). Three microphone inputs are on-board with numerous customizable settings and you can even select to have the vocals audible only through the center or front speakers for sound control, or all the speakers for maximum sound coverage. The DTX-9900K is truly a state-of-the-art machine, ready to exceed your home theater and vocal needs in style.