I'm looking to sell this simple PA system to someone who no longer needs it due to the purchase of a different system. This powered mixer is small, lightweight, and powerful, making it very useful! I've used it about 4 times in a year (about 10 hours total), and it has no scratches or stains, so it's in perfect working condition. The 4-channel powered mixer has microphone and line inputs on each channel, an equalizer to adjust high and low frequencies, and effect level control. The master section has a master EQ to adjust high, mid, and low frequencies, as well as a digital delay effect to adjust reverb and delay. You don't need to buy anything extra if you want to use echo for karaoke. It also has a built-in USB/SD MP3 player. You can play MP3 files from a USB memory stick or SD card, so you can play background music during events without having to prepare a separate player. If you want to connect your portable player or CD deck, there is an AUX input (RCA terminal), so there's no problem. Furthermore, if you want to record your performance, a REC output is provided, so you can connect recording devices such as a portable recorder. This is an affordable and comprehensive powered mixer that is easy to use even for those without special PA knowledge. It's perfect for small-scale live performances, presentations, ceremonies, neighborhood association and office events, mini-live performances, and karaoke at home. 【Main Features】 * 4-channel powered mixer with microphone and line inputs * Powerful 280W (80W continuous) power amplifier * 2-band EQ and FX send on each channel * 3-band master EQ * MP3 playback function from USB memory and SD card * Built-in digital delay effect with adjustable time and repeat ※This is an auction for the powered mixer only. Please be careful not to make a mistake.