Almost a year for the first one, and a little over a year for the second.
The other great thing is the fact he don't ask you for an advanced payment just to hold your place in line. And when he tells you it's your amps turn, and the date it'll be done, it will be done by that date. He honors his words.
Because of that, the quality of his work and the tone they deliver, I would gladly wait as long as it takes to get one.