QUEST-12 Portable PA + USB/SD/FM player & Bluetooth Purchased for a party. The system was great quality beyond my expectation. Connection via bluetooth was a breeze as was usb connection. The bass was excellent, Battery charge lasted 10 hours(wow!). Fm radio may requite a areal for more clarity for my purpose clarity. The microphone were not to bad more than adequate for my purpose. They responded to my emails on the same day and offered advise when i contacted them on which system would suit me for the budget i had. I paid for a cover but was refunded immediately as they did not have a size o fit. I would highly recommend and would def use again. The really are experts in their field.