Do you think 70W PWC will be enough for the MA 500 7G? (I aim to pair them with Marantz 40n) or it would be better to go with something more powerful like Arcam SA30 or NAD 399 (or maybe Soncoz SGP1 if they will be available again)?
Will you be using a subwoofer or two? How big is your room, how far away from the speakers will you normally be, and how much do you like to crank it up?
Here is a review with measurements from JA at Stereophile:
https://www.stereophile.com/content/monitor-audio-silver-500-7g-loudspeaker-measurements
Sensitivity is around 90dB, which is a little higher than average, and impedance isn't particularly tough, so these are a fairly easy load for anything but really loud listening.
Very Nice Set! Are those the Silver 500 6G?
Classoui 300 / 6G
They seem to like 70+ hours of break in. They WILL open up. Also be prepared to buy a nice, fast 12" sealed subwoofer. ASo I have switched from SMSL DA-9 with Dali's Oberon 7s to Sabaj A30a + Monitor Audio Silver 500s 7G. I got Sabaj before I upgraded my speakers so I was already blown away with what the Sabaj did with Oberons. It was like new speakers. Deep, wery massive bass, enchanted melodic mids and still not so impressive highs (still more agile than on SMSL DA-9). Watching movies like Creed 2 or Maverick with Sabaj was like two times better than before. Musically it was a massive upgrade for me. But than I sold Dalis and bringView attachment 271276 home new 500s, and well... that was not as impressive step forward as the amp upgrade.
From the technical point of view everything is more neutral, quicker and cleaner, but I have lost somewhere these magic mid the Dalis had and the deep massive bass
The room accoustic is the one I blame. Falis was so easier to position. Maybe also the Sabaj has not enough power. As the Dalis where 6Ohm and 87dB not 90dB,.8Ohm like MA 500s.
I will have interia of the house renovation planned for spring so I will try to adjust this room a bit (adding some disrupts on the ceiling, better carpet maybe, accoustic wooden slats behind the TV and speakers) some accoustic traps on walls) and then check but at this moment I am not satisfied.
And your point is what?70 hours of break in and fast subwoofers, eh? don't forget to burn in your cables and to sprinkle pixie dust on your amp before installing your audiophile streamer.
I wrote 70+ hours. I've had a set about a year and am very familiar with them. I'm not the only owner of these speakers to notice either.That 70 hours of break in to "open up" is a figment of your imagination. That the whole notion a particular subwoofer having "fast bass" is a myth. That's my point.