Years ago I moved up from an IC-150 to an AR SP-4, another solid state unit. There was very noticeable improvement. Now have a First Sound Presence Deluxe and will never go back. Have fun in your quest for your favorite, but do not hesitate. It is easy to improve on the Crown.
Buying new pre-amp
I'm currently still using my 37 year old Crown IC-150. I was wondering if I will hear any tonal quality improvements if I moved up to a modern pre-amp such as an Emotiva RSP-2. This is the unit I have my eyes on. I know S/N ratios will probably be much better, but will it sound any better through say the CD input which is basically a straight through connection anyway. I know my Music Hall mmf 7 should sound better through the phono input. I'm just figuring, my IC-150 although in mint condition, is all factory old. Any idea's would be helpful. I do have a well trained ear.