Mini Stereo 4 Channel Line Mixer Headphone Monitoring Club Live Studio Recording Warm Tips Parameters Passive mode: Active mode: Packing List Product Features MC5 PRO is a mini audio mixer with 4 groups of 3.5mm inputs, 1 group 3.5mm AUX output and 3.5mm headphone jack output, which is capable of mixing the signals from CD players, instruments, portable recording devices, video playback devices and so on. MC5 PRO supports two working modes to satisfy different requirements: 1. Active mode: need to connect independent USB power, built-in audio amp chip will work, amplify the mixed audio signal and output larger power, can connect headphones to monitor music directly via the 3.5mm headphone jack. 2. Passive mode: no power required, MC5 PRO will work in the state of pure resistance attenuation, output audio signal will be a little attenuated. And the headphone jack output will not support headphone monitoring directly but need to add a headphone amp. With one main output volume knob and four independent input volume knob, the input level of 4 groups can be controlled separately, have no interference to each other. Providing the highest sonic quality even at maximum output level. Mini size with exquisite appearance, flexible circuit both provides monitoring and mixing functions, and won?t make interference to the sound quality, compact design is very convenient to carry and use any time any where. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!