Dear Customers, Thanks for your continuous support! Because of upgrading, our company decided to stop producing MP Series amplifier (including MP-300, MP-500, MP-700, MP-900 and MP-1100) on May 1, 2013. The new module DXP Series amplifier will take the place of MP Series amplifier. The power of every channel is: DXP-3 ? ?300W/8 ohms DXP-5 ? ?500W/8 ohms DXP-7 ? ?700W/8 ohms DXP-9 ? ?900W/8 ohms DXP-12 ? 1200W/8 ohms There are totally five mod