The pumps is silent!
I had the older version dcs 3000 and it had this annoying whining sound that I could hear all over the house.
The dcp I can only hear when I put my head very close to the sump. It has a low humming sound that’s hardly detectable.

Best pump ever

Great pump. DCP20000 excellent suitable as a replacement for the Deltec E-Flow 12.

This is a great pump. I bought a second one to have on hand if I ever needed it.

This pump is dead silent - really solid build. Can’t be beaten for price or quality

Absolutely dead quiet. Very very happy with this unit. Certainly as good as advertised.

Great very silent pump.

Excellent pump, Silent, (I know it's working from the movement of the water), very powerfull and low power consuption:( it can be set to a minimum 9 watt and in my sump it means 800 L/h to the refugium that is 1 meter above.) Best price on Fishstreet. surely I raccomend it.

I have th DCP6500 runing two 1" return lines in my 180 gallon freshwater tank. I am running a herbie/animal overflow setup and my media room tank water handling is totally silent. The loudest sound in my tank is my air pump, struggling to push air through a 31" tall tank. I am runing about F65% on the controller which I believe is about 1202GPH. This is my 3rd Jebao pump. I upgrde to get the latest techjnology and give away the oldeest generation. I have never had an issue with these pumps. They run quiet and cool and I much prefer adjusting pump volume to the prior system of plumbing in the sump to manage the water exchange rate. Excellent product and the cost/performance just cannot be beat.

Arrived fast and confkrme described in the announcement.
Great website for online sales.