I have 1 working power supply, brand new, for the Audioengine N22 amp or A2 speakers, original 1st generation. NOT compatible with the A2+ speakers or the N22 gen 2 amp. They sell for $80-$100 each on ebay. The N22 amp had a short at the speaker terminals, so needs a repair or good for parts. I don't have the expertise to diagnose and repair it, but someone with good skills can do it. Reduced to $20. Due to scammer bots, I do not respond to "is this still available" or "text me".