This was my back up amp that I carried for my shows, I used it 1 time. Has minor scuffs from stacking with other equipment. Very powerful and works great. The Audio2000’S AKJ7075 digital key & echo mixing amplifier with on-screen display is one of the most advanced karaoke equipment featuring innovative design and user-friendly functions. Incorporated with an embedded digital signal processor (DSP), the AKJ7075 features digital controls with digital/numerical V. Display, microphone echo function, and music key control. The AKJ7075 features three microphone inputs and four music source inputs. Up to three microphone inputs can be mixed with one of the four music sources. There is a master volume control knob to control the overall sound level. Three individual microphone volume control knobs are featured to adjust each microphone volume individually so that various loudness of individual voice can be compensated as desired. Both the microphone input sound and the music source input sound can have the tone adjusted through the digital adjustment features. The AKJ7075 further features a key control function, an echo control function and a voice canceling function. The key control function provides the users the capabilities of adjusting the key of the background music to match the users’ voice. The echo control function enables the users to control or adjust the echo volume, the echo delay, and/or the echo repeat. The voice canceling function enhances the users’ entertainment capacity by allowing users to remove the multiplexed vocal sound from the background music as desired. An on-screen display (OSD) feature and a full-function remote control are included for users’ conveniences. The AKJ7075 is equipped with a powerful 600W maximum total power output. The AKJ7075 also features the Clock, Wake-Time and Sleep-Time settings to further accommodate the users’ daily needs. In addition, four audio input terminals and three video input terminals enable users to operate up to four audio/video equipment simultaneously. Two video output jacks allow the users to use two TV’s or monitors at the same time. A sub-woofer output is provided for connecting the self-powered subwoofer to the AKJ7075. The extraordinary features of quality key control with extremely low key-shift distortion, clear/transparent echo sound, versatile performances and function, and rugged/delicate appearance make the AKJ7075 professional karaoke mixinf amplifier an outstanding value in any critical karaoke or DJ application. 600W Maximum Total Power Output. Digital Signal Processor (DSP). On Screen Display (OSD). Full Function Remote Control. Master & Individual Microphone Volume Controls. Multi Audio and Vocal Change Karaoke Function. Three Channel Video and Audio Inputs. Two Video Outputs and One Sub-Out. One Tape-In and One Tape-Out. Clock, Wake-Time and Sleep-Time Settings. MICROPHONE— 75 dB DVD— 40 dB TV— 40 dB TUNER— 40 dB TAPE IN— 40 dB. TOTAL HARMONIC DISTORTION T. 20 ¡V 20,000Hz (+/- 1dB). 0 ¡V 40 dB. 28.6 lbs (13 Kgs). DIMENSION (W X D X H). 17.1″ X 11.8″ X 5.2 (435 X 300 X 132 mm). The item “Audio2000s AKJ7075 600W Karaoke Vocal Mixer Amplifier Audio 2000s” is in sale since Saturday, July 02, 2011. This item is in the category “Musical Instruments & Gear\Karaoke Entertainment\Karaoke Mixers”. The seller is “tomsawyer48″ and is located in Sacramento, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Costa rica, Brazil, Chile, Colombia, Panama, Trinidad and tobago.