hướng dẫn cách sử dụng Yamaha LS9

My channel is a professional NEXO STM Sound & Lighting system Contact Thien 📱 Customer Service / Technical: 0918668935 Mr. Thien ✉️ gmail: [email protected]    / thiensoundman   🏫 Address: 05 Tan Trao, Ninh Kieu District, Can Tho City. Truong Phuoc Thien STK 1018755078 Vietcombank Can Tho branch DONATE Link: https://www.paypal.me/thienlight ☞ I am very happy to have everyone visit Thien NEXO STM channel, hoping that the review videos, sharing, and sound testing will bring everyone the most objective and realistic view of music quality and microphone, capacity, features, advantages and disadvantages of each brand and each speaker model. Wish everyone to choose the right speaker for their taste. ☞ During the video production process, we look forward to receiving your kind contributions so that Thien NEXO STM can serve customers better, contributing to the overall development of the Vietnamese audio industry. ☞ Wish everyone a happy video watching.......