Sennheiser CX 3.00 Review: Ranked #62 of 68

Last updated: October 10, 2026

The Sennheiser CX 3.00 ranks #62 out of 68 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Sennheiser

Prices on this page were last checked October 10, 2026 at 5:37 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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#62 Sennheiser CX 3.00: $79.99 Amazon eBay

Pros: Bass is boosted about 4 dB at 60 to 200 Hz and 2.5 dB below that in oratory1990’s measurement, so kick drums and bass lines hit with extra weight. Treble from 6 to 10 kHz is lifted about 6 dB, which adds a bright edge to cymbals and gives it a V-shaped character some listeners enjoy. The 18 ohm impedance and 118 dB SPL/V sensitivity let a phone drive it easily.

Cons: A sharp 8.6 dB peak near 7.6 kHz can make hi-hats and sibilants harsh, and presence between 3 and 6 kHz is down about 4.3 dB, with a 5.7 dB dip near 3.5 kHz that pushes vocals back. A preference score of 58 and a 3.19 dB deviation mean the balance is far from the target. The Shure SE215 and FiiO FH3 are rated higher.

Released2015 (11 years ago)
BackClosed
ConnectionWired
Deviation From Target3.19 dB standard deviation
Driver TypeDynamic
Form FactorIn-ear
Frequency Response17Hz - 21kHz (Manufacturer specified)
Harman Preference Score58 (measured by oratory1990, via AutoEQ)
Impedance18 ohms
Sensitivity118 dB SPL/V
Tonal Tilt-0.74 (negative is warmer, positive brighter)
EQ preset to match the Harman target

Set a preamp of -5.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.

FilterFrequencyGainQ
Low shelf105 Hz-2.1 dB0.70
Peak3,874 Hz+7.0 dB0.66
Peak7,101 Hz-10.4 dB0.77
Peak167 Hz-3.4 dB1.15
Peak4,954 Hz+4.9 dB1.44
High shelf10,000 Hz+0.3 dB0.70
Peak736 Hz+1.5 dB1.33
Peak1,412 Hz-1.1 dB2.20
Peak55 Hz+0.4 dB1.63
Peak314 Hz-1.0 dB3.41

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