I want to externally clock my M7CL. I see a BIg Ben in a lot of people's racks and some people swear it makes the M7 sound like a completly different console. I am not so sure if I buy the hype. Can any one give me their 2 cents on this issue? When I ask the techs directly at Yamaha they won't exactly say to use an external clock but they don't say not to either. Point is do I really need a Big Ben? Or can I acheive the same results with a cheaper clock? I really can not charge extra because I have a clock in my rack. So tell me if it is worth all that money.