MuddyOne Now I might be confused here, so duo is flat . So you order two sets of flat burrs one for espresso and one for filter? I thought that espresso burrs are referred to as conical burr and filter as flat.
When you order you can choose 1 set of burrs on carriers, or 2 sets of burrs, both on carriers. This allows you to swap between espresso to filter burrs just by pulling the old carriers out (with the burrs) and dropping the other set in. takes about 2 minutes or less.
The espresso burrs will do filter, same as any other grinder…but the best filter is using filter specific burrs. e.g. If I think I’ll have one filter coffee and the rest espresso or americano…I probably wouldn’t change the burrs. However, If I’m having a filter day or afternoon…then I definitely would put the filter burrs in. Taste is much improved with filter specific burrs..