Thank you for taking the time to respond.
I'm continuing to use some of the equipment, because Paul trained me on its care. So, I only have about 10-12 pieces worthy of preservation and/or shipping, which makes the lot too small for a professional estate sale handler, plus they can't exercise discretion as to whether or not the buyer was just going to resell the equipment. And earlier this year I did sell one pair of high end floor speakers currently valued at $1500-2000 for just $600 through a trusted consignment shop. There, I'm fairly sure the consignment retailer did respect my request for the speakers to go to someone who wanted them for personal use. I was testing the waters with that sale, which took six months, and the retailer had considerable latitude for negotiation. For such a big item, the retailer was interested in handling the consignment. For items with a current worth under $1000, interest is a lot less. I live in a relatively rural, low population area.
A core issue I face is connecting with an interested and trusted party who isn't just interested in a "score". That's why I turned to this forum.
I face a similar issue with a classical music collection consisting of 1000+ CD's, copied to disc (1+ terabytes) for transportability, with a cross-referenced file system for physical or digital lookup by composer(s), name of piece(s), or performer(s). Any direction to contact a fledgling public radio station, educational institution, or music charity would also be appreciated.