I'm just curious if anyone is having any success with 4 ohm speakers using a Marantz mm7055 power amplifier. The manafacter claims that it will blow eventually. Is that just at extremely high levels? I'm currently running a marantz sr7007 with monitor audio RX8s which run at 4 ohms, GXC150 which runs at 8 ohms, and RX1s which run at 6 ohms. Thanks in advance for any advice.