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Sennheiser CX 300S

What's in the box

  • Ear adapter set (XS, S, M, L)
  • Storage pouch


Should we be shocked that for 50 bucks Sennheiser delivers a versatile and fatigue-free sound signature with plenty of detail? Nope.
Headphone Dungeon
(Apr 2019)

Sennheiser offers impressive bang for your buck when it comes to the CX 300S. Built like a tank and sounding surprisingly good for such a budget-minded earphone, the CX 300S out-classes many of its would-be competitors.
Major HiFi
(Apr 2019)


Wear style
Fits in-ear
Custom fit IEM
Cable wear style: Straight-down
Suitable usage: Home, Work, Travel
Plug type
Wired connection
Cable length
120cm cable
Double entry cable
Microphone built in
Microphone built into cable
Battery powered
No battery required
Battery replaceable
Non-replaceable battery
Weight (g)
Weighs 12g
Impedance (Ω)
18 ohms impedance