This is a set sale of the TC-HELICON VoiceLive 3 EXTREME and the genuine Switch-6 switcher + the MP-76 microphone, which can be operated with the microphone-side switch. Individual sales are not available. This is a multi-functional effector that allows for vocal effects and looping. - Brand: TC-HELICON - Model: VoiceLive 3 Extreme - Accessories: Switch-6, Microphone (MP-76) - Connection Terminals: XLR, 1/4 inch jack, USB - Functions: Effects, Looper, Harmony - Operation Panel: LCD display, Foot switch Thank you for viewing. This item is being sold as partially defective. The microphone and foot switch are genuine TC-HELICON products and have no operational issues. The main unit produces sound without problems, but the switches may not respond at times. It may work without issues after restarting the power. Please purchase only if you understand this.