If you are looking for the best quiet blender, the refurbished Blendtec Designer 800 boasts the most advanced blending technology ever seen. The Professional 800 is the quietest blender that operates at a sound level that won’t interrupt your daily routine.

No tamper/plunger needed with the patented technology which automatically pulls ingredients toward the blade, instead of spinning around in a circle.

The smooth, molded finish of...