Cruz Enrique

Anyone familiar to the Rotel 15 series. I have some questions:

Are they analog or digital?

Is the Rotel RB-1562 a Bang & Olufsen ICE power technology?

Class D amps are very efficient, but has a large amount of distortion; class A has low distortion but generate lots of heat. Rotel lower the distortion of this amp to .03%, just want to konw more about this ICE technology; few info about this amp, someone familiar? need some help here! Thanks in advance!

How does the Adcom sound?

I'm expecting one Adcom SLC-505 I've grab from eBay for less than 100 bucks. Do you that I'm a lucky guy? I'm a fan of passives!! Less gimmicks better sonic results. I need your impressions folks!

More info about this straight line pre welcome !! Any suggestions for an upgrade? Alps or Hotpoint pots for example?