I really don't believe that the NAD370 is creating the hardness or edginess you are hearing. I honestly would look elsewhere in the system. It is not the last word in amps but it's certainly musical and if anything, a haired layed back.
You may need to play with setup of the Sonus Faber speakers some or maybe check your room acoustics. I have found over the years that hardness starts there. There's things you can do with the room and I personally consider it THE most important aspect of the "System."
Your system doesn't look to be one that would be hard. I have seen people spend mega bucks looking for improvements that did not come because of room limitations. The best equipment cannot overcome a bad room.
You would have to spend a good bit of money to make an improvement with electronics. The NAD isn't bad and can stand comparison with more expensive equipment. Don't under estimate it.
If you must change, I would agree on the MF's 308 integrated. Another would be the Creek 5350se. No hardness or edginess there!
My top pick in integrated's of reasonable money would be the Ayre AX7e. A very, very good sounding piece but MUST be run balanced to get the most out of it. You can get it discounted to about $2600 or so or by used where they still run $2400 or so.
You may need to play with setup of the Sonus Faber speakers some or maybe check your room acoustics. I have found over the years that hardness starts there. There's things you can do with the room and I personally consider it THE most important aspect of the "System."
Your system doesn't look to be one that would be hard. I have seen people spend mega bucks looking for improvements that did not come because of room limitations. The best equipment cannot overcome a bad room.
You would have to spend a good bit of money to make an improvement with electronics. The NAD isn't bad and can stand comparison with more expensive equipment. Don't under estimate it.
If you must change, I would agree on the MF's 308 integrated. Another would be the Creek 5350se. No hardness or edginess there!
My top pick in integrated's of reasonable money would be the Ayre AX7e. A very, very good sounding piece but MUST be run balanced to get the most out of it. You can get it discounted to about $2600 or so or by used where they still run $2400 or so.