6-channel professional mono audio mixer, phenyx pro sound board w/ 3-band eq, build-in 99 dsp effects, bt function, recording to usb drive, ideal for studio, stage, karaoke (ptx-20) phenyx pro 6-input, 3 band eq, +48v phantom power: this professional altra-low noise discrete mic preamp has 6 mono input channels with gold plated xlrs and balanced line inputs. ultra-musical 3-band eq on all channels to imbue signals with incredible warmth and detailed musical character. +48v phantom power selection enables mixer to be used with condenser microphone and wired mic. usb/bt function: compatible with usb/flash reader/mp3, allowing users to connect external usb stick or flash drive to stream music into the mixer. bt function enable users to wirelessly stream music in from ipad and smart phone to mix music. built-in controls to play/pause/switch between modes. 99 dsp effects, recording function: high-quality components and rugged reliable construction to ensure durability. built-in 99-bit dsp sound processor provides 99 effects that can be selected by program control knob, with detailed documentation above to provide better personal mix. this 6-input audio mixer also equipped with recording function. usb port can switch to record mode and record music to other devices. high quality sound, versatile use: extremely high headroom to offer more dynamic range. 6 separate fader for quick volume adjustment. this analog mixer provides accurate, crisp and clear sound quality. the extra clean sounding effect makes it ideal for live mix in occasions like live gigs, shows, stage performance, dj events, and karaoke.devoted service: genuine phenyx pro audio products come with 12-month manufacturer assurance and supportive customer service. welcome to come to us for troubleshooting or replacement of discontinuous/defective parts. please contact us at service @ phenyxusa.com or support @ phenyxpro.com