oh, i posted the mobile link. delete the “m” bevore ebay and you get the full site.
sorry Alan, i am not sure if the sound is different, because i own only one piece of each.
so i can only try to play the same tones on alto and soparano: when i play the same tone on the soprano and the alto there is definatly a difference, but i am not sure if the difference come from wood against plastic.
but in my opinion there must be a difference! plastic and woodresonance can not be the same.
perhaps this is not the right place, but here a detail of the woodbody piano26: