I appreciate the responses. I'll take all suggestions into account. The unit may be listed sooner rather than later.
Selling vintage components
I plan on listing my McIntosh MA-230 amp for sale in the near future. I have a concern and would love to hear a few opinions on this. The amp was originally released from 1963 - 1966. I purchased the amp several years ago and Terry DeWick worked his magic on it. It's working fine, my issue is selling a 50-year-old amp only to have it die in the hands of a new owner. My gut would say refund the money to the buyer, so I would be out the selling price. I suppose anyone who purchases vintage electronics does so understanding the risks. Your thoughts would be much appreciated.