Forgot that I also had an A5 for a short time, and it was my least favorite. Keep in mind that the A5 and A3.5 were built in Taiwan, and the A3, A300, A3.2, and A308 were built in England.
Before the change over to the Audiogon format, it seemed that more of the MF "A" series integrated amps were for sale.Agree, as you did see a lot of A5 and A3.5 being sold. The A300 and A308 have been the most desirable of the "A" series, and what I said about them selling has been true for some time. I watched this for years, curious to see if my A308 was holding value.