The W-A2 model is a 30/31 (drone) key hexagonal anglo with parallel reed pans. Its equilibrium is more bass favored than the A-1 model. 

The W-A2 is available with vintage type parallel reeds (standard), or the Wakker tapered reeds (optional).
The Wakker reeds option consists of long scale tapered reeds, with better reed scaling (more reed frame sizes for the same compass) which results in a more powerful tone and better balance. 

The standard A2 configuration has hardwood flat ends, raised ends are optional.