With your advices I mind I made another trip to my reseller a couple of days ago and got to listen to RF-62´s with a Pioneer receiver and a Marantz cd-player.
Brought some carefully chosen cd´s this time...
Rockenfield Speer "Hells canyon", Motley Crue "Motley crue" (remastered 1999), Matchbox twenty "Mad season", Megadeth "Cryptic writings" (HDCD), Deep purple "Burn" (remastered 2004)
...and the sound was fantastic.
On the next visit in a couple of weeks I will listen to the same cd´s but with different electronics, Marantz SR 7001 & DV6001.
Good night America, wherever you are...