I have a Yamaha RXv-3000 - running at 8 ohms right now. Will be getting Martin Logans for front L&R which requires amplification @ 4 ohms. although the Yamaha has a switch selector for both 4 & 8 ohm loads - I am not comfortable running the Yamaha at 4 ohms (I have 8 ohm B&W rear surrounds and rear centre) - I hear the current draw from the larger ML's might be too much for a receiver. So does anyone out there have a similar setup where you are using a receiver @ 8 ohms and an outboard power amplifier from the mains preout running @ 4 ohms (if that is possible). Some body help!!!!!! Is there a problem with this setup?? thanks.