Quiet, but max capacity is not much more than a cup
It really is very quiet!  I haven't used ice in it,  but just my regular protein mix and a collagen supplement.  It could be a little bigger.  With 8 oz. of liquid,  it does the protein mix alone great,  but can't handle mixing the supplement as well.  You wouldn't be able to add more than a couple berries, for instance. Otherwise it's great.
Rating: 4 stars