Dyson Dyson models. Replacement Post Hose, Part 911961 01. DC17 Pre DC17 # Roller, Revolution Home and s Comparable Filter; Minimum Load Impedance: Low Impedance Minimum Load Impedance: Low Impedance Output: 4 Ohms 70 V Output: 40 Ohms 100 V Output: 80 Ohms Make hands free calls ��� METICULOUSLY DESIGNED TO COMPARE: Compare to Part ��� ESSENTIAL FOR ALLERGY SUFFERERS: Breathe clean ��� CLEAN HOME