Thanks to everyone who responded. The medium-ish power transformer was spoken for within 15 minutes or so. Whew. Wish I had known - I thought I would have trouble getting rid of it! Ha. Lots of folks who want to build a nice modest 1/2 gallon or so amplifer. I do have 2 other somewhat bigger transformers that I will be purging a bit later on. 73 Bob, WA2CKY