Sennheiser IE 4 vs Zero Audio Duoza ZH-DWX10

Short answer: the Sennheiser IE 4, though neither ranks well in its class. It ranks #425 of 450 in-ear headphones by sound quality, rated 2.3/5, at $89; the Zero Audio Duoza ZH-DWX10 ranks #428, rated 2.1/5, at $89. Close enough in price that the sound-quality gap is the deciding factor. Both are rated below 3.0/5 among the 450 in-ear headphones; for better sound, the Intuaura Reference 2019 ranks #5 at $34.99.

What the Sennheiser IE 4 does well: Sub-bass and bass both sit more than 6 dB above target and extend fully to 20 Hz, a good match for listeners who want big, rumbling bass and a V shaped sound. The tradeoff: A huge 15.3 dB peak near 5.1 kHz and presence about 10 dB above target make vocals and snares sound shouty and fatiguing.

Why pick the Zero Audio Duoza ZH-DWX10: A dual dynamic driver design at 20 ohms and 100 dB/mW plays at good volume from a phone. The catch: A preference score of 51 in crinacle’s measurement places it well off the response most listeners prefer, so expect a clearly colored sound.

Buy the Sennheiser IE 4. It is rated higher for sound quality than the Zero Audio Duoza ZH-DWX10 at the same price, so only choose the other one for a particular feature it does better.

Want more options? Browse the full Headphones rankings.

Specifications Side By Side

Related Headphone Comparisons

How Sennheiser IE 4 compares with other leading options:

• Sennheiser IE 200 vs Sennheiser IE 4
• Sennheiser IE 4 vs Sennheiser IE 600
• Sennheiser IE 4 vs Sennheiser IE 900
• Questyle NHB12 vs Sennheiser IE 4
• KZ ZAS vs Sennheiser IE 4

Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Headphones In Full

Sennheiser IE 4: $89.00 B&H Photo Video eBay

Pros: Sub-bass and bass both sit more than 6 dB above target and extend fully to 20 Hz, a good match for listeners who want big, rumbling bass and a V shaped sound. The 16 ohm impedance and 106 dB/V sensitivity let it run fine from a phone. It is rated level with the CCA PLA13 at a similar price.

Cons: A huge 15.3 dB peak near 5.1 kHz and presence about 10 dB above target make vocals and snares sound shouty and fatiguing. The KZ ZAS is rated higher and costs less.

Full Sennheiser IE 4 review and specifications →

Released	2005 (21 years ago)
Back	Closed
Connection	Wired
Deviation From Target	3.59 dB standard deviation
Driver Type	Dynamic
Drivers	1 x dynamic
Form Factor	In-ear
Frequency Response	40Hz - 20kHz (Manufacturer specified)
Harman Preference Score	53 (measured by oratory1990, via AutoEQ)
Impedance	16 ohms
Sensitivity	106 dB SPL/V
Sub-bass Extension	Within 6 dB of target down to 20 Hz (+5.6 dB at 30 Hz)
Tonal Tilt	-0.43 (negative is warmer, positive brighter)

EQ preset to match the Harman target

Set a preamp of -5.2 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.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-3.3 dB	0.70
Peak	1,393 Hz	+6.5 dB	0.39
Peak	4,512 Hz	-13.3 dB	0.97
Peak	8,609 Hz	+6.4 dB	1.20
Peak	200 Hz	-2.3 dB	1.14
High shelf	10,000 Hz	-1.0 dB	0.70
Peak	2,324 Hz	+2.4 dB	3.14
Peak	3,227 Hz	-4.2 dB	4.39
Peak	64 Hz	+0.9 dB	2.17
Peak	4,107 Hz	+2.7 dB	6.00

• Reviews, Comparisons and Sound Samples
  • AutoEQ results for the Sennheiser IE 4 (oratory1990 measurement)
• Head-to-Head Comparisons
  • Sennheiser IE 4 vs CCA PLA13
  • Sennheiser IE 4 vs BASN Bmaster
  • Sennheiser IE 4 vs KZ ZAS
  • Sennheiser IE 4 vs Questyle NHB12
  • Sennheiser IE 4 vs Sennheiser IE 900
  • Sennheiser IE 4 vs Sennheiser IE 600
  • Sennheiser IE 4 vs Sennheiser IE 200

Zero Audio Duoza ZH-DWX10: $89.00 Amazon eBay

Pros: A dual dynamic driver design at 20 ohms and 100 dB/mW plays at good volume from a phone. Its rating matches the 1MORE Penta Driver for less money and sits above the Etymotic ER3SE and KZ ASX, which cost more.

Cons: A preference score of 51 in crinacle’s measurement places it well off the response most listeners prefer, so expect a clearly colored sound. Better tuned in-ears are easy to find for similar money.

Full Zero Audio Duoza ZH-DWX10 review and specifications →

Released	Dec 2014 (11 years ago)
Back	Closed
Connection	Wired
Deviation From Target	3.56 dB standard deviation
Driver Type	Dynamic
Drivers	2 x dynamic
Form Factor	In-ear
Frequency Response	7Hz - 24kHz (Manufacturer specified)
Harman Preference Score	51 (measured by crinacle, via AutoEQ)
Impedance	20 ohms
Sensitivity	100 dB/mW
Tonal Tilt	-1.10 (negative is warmer, positive brighter)

EQ preset to match the Harman target

Set a preamp of -5.4 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.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-0.5 dB	0.70
Peak	179 Hz	-5.9 dB	0.63
Peak	998 Hz	+5.0 dB	1.16
Peak	6,224 Hz	+5.3 dB	1.71
Peak	3,746 Hz	+2.8 dB	4.79
High shelf	10,000 Hz	-7.1 dB	0.70
Peak	9,322 Hz	+4.2 dB	2.54
Peak	2,520 Hz	-3.5 dB	3.73
Peak	1,593 Hz	+1.2 dB	2.95
Peak	3,281 Hz	+1.6 dB	5.67

• Reviews, Comparisons and Sound Samples
  • AutoEQ results for the Zero Audio Duoza ZH-DWX10 (crinacle measurement)
• Head-to-Head Comparisons
  • Zero Audio Duoza ZH-DWX10 vs BASN Bmaster
  • Zero Audio Duoza ZH-DWX10 vs CCA PLA13
  • Zero Audio Duoza ZH-DWX10 vs HIFIMAN RE600S