Went for a demo, I had the opportunity to test MA Silver 500 (new model) with Arcam A39, NAD C326BEE, Marantz PM8600 and Yamaha a-s1100. As streaming we used Bluesound Node 2, this should be a good DAC/Streamer, 32BIT 192Khz.
Unforunately I didnt had time to play so loud as there was not a separate demo room in the shop..
Arcam A39: narrowed sound, for my personal point of view not a wide soundstage, not so many details, good dynamic, no warm with MA.
NAD C326BEE, more detailed than Arcam A39, better soundstage, more details, low dynamic.
Marantz PM8600, it add a personal touch in the music, refined high and louder then others, wide soundstage, but when it comes to play Metallica, it couldnt reproduce drums, no presence of this instrument, it might be that we should adjust some level with equalizer..I have no clue.
Yamaha A-S1100, little bit better than my RN500, I would say not a difference night/day, more detailed for sure, play louder, but as mine it color the tracks, exacerbating bass presence when it is not needed so sometimes you have to adjust with equaliser to have a neutral reproduction.
Shop assistance didnt want me to try Tannoy as for his own opinion doesnt sound well, so I havent waste my time asking.
I would say that there is a difference between MA silver 500 and MA Silver 8s, it is not due to the half inch in the drivers, they sound differently, high frequencies/tweeters are exactly the same, but bass in 500 is more controlled than mine, however it sounds more flat at the end, low and middle range are less detached than silver 8s, however they are less engaging then mine, I had no fun playng them.
I will do anothe rtry to pair my MA with Cambridge amplifier as my neighbour own one, if I cannot find what I am looking for I will buy the NAIM I auditioned years ago.