I gave it 4 stars instead of 5 because it doesn't make the beep indicating brewing is done and because the warming unit makes a loud boiling sound for about 15 minutes after brewing is complete.

The noise is a loud gurgling sound and sounds like it could blow up any minute

It make a loud vibrating sound, but when I manually push the top part back slightly it stops.

Only reason I didn't give it 5 stars is because of the annoying sound it constantly makes while heating the coffee (for up to 4 hours).

After the 'coffee' was brewed, I could hear a gentle gurgling sound

It makes a nice cup(s) of coffee.

Great clearance for your tall coffee mugs, save my 32 oz Yeti tumbler but o be fair that thing is massive

Makes a great cup o' joe too!