@romad - I would not be too concerned about servicing for an older ARC preamp. ARC is famous for servicing older, even vintage gear. Additionally there are shops out there who service older tubed gear as well.
Happy listening.
Audio Research Pre-Amp advice
Hi, what would be a good used Audio Research pre-amp that has a remote, that is overall very musical. My budget is under 6K? I really don't want any Ref. pre's because too many tubes. Also something not too old, I do not want to have to bring in for service. I welcome and appreciate any advice. Thank you!