Many thanks to ...
KE8JWB (Randy), KG5GTW (Bob), N0SO (Mike), N0SM (Steve), W9EBK (Don), and K8WPE (Dave)
… for your responses, all very helpful, to my recent, "Any suggestions on an audio amp appropriate to Hilltoppers 20&40?" query.
Confession: My hearing improved greatly after a thorough cleaning of my earbuds. Oy!
Happy Holidays 4SQRP
SF CA USA