Not in my mind, if only for the shipping risk. If a phone call w the s/n does not indicate any possible problems or "unadvertised updates", I wouldn't do it, but I'm not all that anal about my gear.
Manufacturer checkups
This question is in reference to an older preamp I recently purchased with which I have had no prior experience. Some classifieds state the item was recently check out by the manufacturer and given a "clean bill of health". With an older item that has no functional or visual problems and no obvious sonic deficits, is getting that item checked out worth while?
Thanks
Thanks