Amplifier for Altec Valencia speakers


I have found a pair of Altec Valencia speakers for a new blast from the past project. I am hopeful to hear of experience, both good and bad, regarding hunting down amplifiers for these speakers. Thank you in advance for sharing your thoughts.
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I have to wonder what Atmasphere does with all the transformers he doesn't use. Donations to the transformerless among us? Yard sculpture? Paper weights?
My mom always told me for every output transformer made, God kills a kitten.
Anyone have any thoughts on Air Tight ATM-1 option?