Ptx-15 Is A Professional Audio Mixer That Features A Usb Audio, And Karaoke. Product Details 4-INPUT, 3 BAND EQ, +48V Phantom Power: This professional ultra-low noise discrete mic preamp has 4 mono input channels with gold plated XLRs and balanced line inputs. The mixing board with ultra-musical 3-band EQ on all audio DJ mixer channels to imbue signals with incredible warmth and detailed musical character. +48V phantom power switches on all DJ board channels enable use with condenser microphones with ease USB AUDIO INTERFACE /BT FUNCTION: This Bluetooth mixer enables users to wirelessly stream music from iPad/smartphone . USB audio interface with USB-A jack on the USB mixer can play audio from USB drive. This recording interface can also record to PC/iPad/Phone/USB stick with compatible adapters. Built-in controls to play/pause/switch between modes. ***CANNOT use USB and Bluetooth at the same time STEREO GRAPHIC EQUALIZER, 16 DSP EFFECTS: Sturdy metal builds for durability and white color design for an elegant look. The built-in soundboard effects processor provides 16 DSP effects, with detailed documentation to provide a better personal mix. This 4-input audio music mixer also equipped with a stereographic equalizer provides tone control and precise high-quality sound over different frequencies. HIGH QUALITY SOUND, VERSATILE USE: Extremely high headroom to offer more dynamic range. This studio mixer provides accurate, crisp and clear sound quality. The extra clean sounding effect makes it suitable for live mix in occasions like live gigs, shows, stage performance, DJ events, and karaoke. Besides, users can press ?SOLO? button the karaoke mixer to monitor pre-fader unprocessed signal before output. 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. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.