Audio Research Pre-Amp advice

There’s an Ls28 for sale on eBay for $5500. It doesn’t say SE. A little over 1000 hrs on the tubes.

Thanks, I saw that but don't like to deal with ebay. I would rather buy a demo from a dealer if available and I am looking for silver color.

I have a ARC LS15 tube pre amp that I bought in 1996 and still use it to this day I did cap upgrade over 15 years ago It has 4 12xA7 tubes that have been replace once  Oh it also has a remote

@tomic601 I also have an ARC Ref 5SE and love it.  But if you haven't replaced the tubes for 6000 hours you should really do that.  The 6H30 and 6550 tubes are cheap and the manual recommends replacing them every 4000 hours.  It is likely that there has been a slight degradation in the sound quality and you just haven't noticed it.

I have owned several ARC pre amps over the years and each one has been great. I currently have an LS27 with XLR and remote.  I have no desire to upgrade at this time.  Very musical pre amp.