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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Comfort
    3. Controls
    4. Breathability
    5. Portability
    6. Case
    7. Build Quality
    8. Stability
    9. Headshots 1
    10. Headshots 2
    11. Top
    12. In The Box
  5. Sound
    1. Sound Profile
    2. Frequency Response Consistency
    3. Raw Frequency Response
    4. Bass Accuracy
    5. Mid Accuracy
    6. Treble Accuracy
    7. Peaks/Dips
    8. Imaging
    9. Passive Soundstage
    10. Virtual Soundstage
    11. Weighted Harmonic Distortion
    12. Test Settings
  6. Isolation
    1. Noise Isolation
    2. Leakage
  7. Microphone
    1. Microphone Style
    2. Recording Quality
    3. Noise Handling
  8. Active Features
    1. Battery
    2. App Support
  9. Connectivity
    1. Bluetooth
    2. Non-Bluetooth Wireless
    3. Wired
    4. PC / PS4 Compatibility
    5. Xbox One Compatibility
    6. Base/Dock
  10. Comments

Sennheiser HD1 In-Ear / Momentum In-Ear vs Sennheiser IE 40 PRO

Side-by-Side Comparison

Products

Sennheiser HD1 In-Ear / Momentum In-Ear
Sennheiser IE 40 PRO

Tested using Methodology v1.3.1

Updated Aug 07, 2021 12:27 AM

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Amazon.com

Tested using Methodology v1.4

Updated May 17, 2024 03:01 PM

SEE PRICE
Amazon.com
Sennheiser HD1 In-Ear / Momentum In-Ear Picture
Sennheiser IE 40 PRO Picture

Variants

  • Momentum In-Ear (Android, Black)
  • Momentum In-Ear (Android, Red)
  • Momentum In-Ear (iOS, Black)
  • Momentum In-Ear (iOS, Red)
  • IE 40 PRO (Black)
  • IE 40 PRO (Clear)

Our Verdict

Sennheiser HD1 In-Ear / Momentum In-Ear

Sennheiser IE 40 PRO

The Sennheiser IE 40 PRO are slightly better critical listening in-ears than the Sennheiser Momentum In-Ear. They are better-built than the Momentum and have slightly better audio reproduction. On the other hand, the Momentum might be more versatile for casual listening thanks to the in-line remote, and their fit blocks more ambient noise, which will be better for commuting and traveling. They also have an in-line microphone for calls that the IE 40 PRO doesn’t have.

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Momentum In-Ear
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Android, Red
Momentum In-Ear
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iOS, Black
Momentum In-Ear
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iOS, Red
Momentum In-Ear
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Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

6.7
5.9

Controls 
 

7.4
0.0

Noise Isolation 
 

7.3
6.4

Full Comparison

Design

Style  

Design Picture 2  

Sennheiser HD1 In-Ear / Momentum In-Ear Design Picture 2
Sennheiser IE 40 PRO Design Picture 2

Type  

In-ear
In-ear

Enclosure  

Closed-Back
Closed-Back

Wireless  

No
No

Transducer  

Dynamic
Dynamic
Show Text 

Comfort 
 

6.5
6.5

Comfort Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Comfort Picture
Sennheiser IE 40 PRO Comfort Picture

Weight  

0.03 lbs
0.04 lbs

Clamping Force 
 

0 lbs
0 lbs
Show Text 

Controls 
 

7.4
0.0

Controls Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Controls Picture
Sennheiser IE 40 PRO Controls Picture

OS Compatibility 
 

iOS
No Controls

Ease Of Use  

Decent
No Controls

Feedback  

Good
No Controls

Call/Music Control  

Yes
No

Volume Control  

Yes
No

Microphone Control  

No
No

Channel Mixing 
 

N/A
No

Noise Cancelling Control  

N/A
No

Talk-Through 
 

N/A
No

Additional Controls  

No
No
Show Text 

Breathability 
 

9.2
9.2

Breathability After Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Breathability After Picture
Sennheiser IE 40 PRO Breathability After Picture

Avg.Temp.Difference  

0.8 °C
0.8 °C
Show Text 

Portability 
 

9.1
9.2

Portability Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Portability Picture
Sennheiser IE 40 PRO Portability Picture

 

2.13"
2"

 

2.13"
2.1"

 

0.75"
0.8"

Volume  

3.4 in³
3 in³

Transmitter Required  

N/A
No
Show Text 

Case 
 

7.5
6.0

Case Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Case Picture
Sennheiser IE 40 PRO Case Picture

Type  

Hard case
Pouch

 

3.88"
N/A

 

3.88"
N/A

 

1.31"
N/A

Volume  

19.7 in³
N/A
Show Text 

Build Quality 
 

7.0
7.5

Build Quality Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Build Quality Picture
Sennheiser IE 40 PRO Build Quality Picture
Show Text 

Stability 
 

7.0
7.5

Stability Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Stability Picture
Sennheiser IE 40 PRO Stability Picture
Show Text 

Headshots 1  

Angled Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Angled Picture
Sennheiser IE 40 PRO Angled Picture

Side Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Side Picture
Sennheiser IE 40 PRO Side Picture

Headshots 2  

Front Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Front Picture
Sennheiser IE 40 PRO Front Picture

Rear Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Rear Picture
Sennheiser IE 40 PRO Rear Picture

Top  

Top Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Top Picture
Sennheiser IE 40 PRO Top Picture

In The Box  

In The Box Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear In The Box Picture
Sennheiser IE 40 PRO In The Box Picture
Show Text 
Sound

Sound Profile 
 

Frequency Response  

See details on graph tool

Frequency Response  

See details on graph tool

Bass Amount 
 

2.6 dB
-2.26 dB

Treble Amount 
 

-2.08 dB
-1.73 dB

Frequency Response Consistency 
 

9.5
8.7

Consistency L  

See details on graph tool
See details on graph tool

Consistency R  

See details on graph tool
See details on graph tool

Avg. Std. Deviation 
 

0.11 dB
0.27 dB
Show Text 

Raw Frequency Response 
 

Raw FR L  

See details on graph tool

Raw FR L  

See details on graph tool

Raw FR R  

See details on graph tool

Raw FR R  

See details on graph tool

Bass Accuracy 
 

7.7
7.9

Bass  

See details on graph tool

Bass  

See details on graph tool

Std. Err. 
 

3.19 dB
2.86 dB

Low-Frequency Extension 
 

10 Hz
45.55 Hz

Low-Bass 
 

1.04 dB
-4.91 dB

Mid-Bass 
 

2.55 dB
0.07 dB

High-Bass 
 

5.22 dB
2.93 dB
Show Text 

Mid Accuracy 
 

7.9
8.8

Mid  

See details on graph tool

Mid  

See details on graph tool

Std. Err. 
 

2.78 dB
1.63 dB

Low-Mid 
 

3.09 dB
2.45 dB

Mid-Mid 
 

-2.35 dB
-0.01 dB

High-Mid 
 

-2.08 dB
-0.09 dB
Show Text 

Treble Accuracy 
 

6.0
7.8

Treble  

See details on graph tool

Treble  

See details on graph tool

Std. Err. 
 

5.1 dB
2.97 dB

Low-Treble 
 

-5.45 dB
-3.52 dB

Mid-Treble 
 

0.63 dB
-0.15 dB

High-Treble 
 

-1.69 dB
-1.34 dB
Show Text 

Peaks/Dips 
 

6.2
8.3

Peaks/Dips Graph  

See details on graph tool

Peaks/Dips Graph  

See details on graph tool

Peaks 
 

2.75 dB
1.02 dB

Dips 
 

1.64 dB
1.21 dB

Imaging 
 

9.4
8.5

Group Delay  

See details on graph tool
See details on graph tool

Phase Response  

See details on graph tool
See details on graph tool

Weighted Group Delay 
 

0.11
0.17

Weighted Amplitude Mismatch 
 

0.33
1.24

Weighted Frequency Mismatch 
 

1.07
1.9

Weighted Phase Mismatch 
 

1.05
1.44
Show Text 

Passive Soundstage 
 

0.7
1.0

PRTF  

Sennheiser HD1 In-Ear / Momentum In-Ear PRTF
Sennheiser IE 40 PRO PRTF

PRTF Accuracy (Std. Dev.) 
 

N/A
N/A

PRTF Size (Avg.) 
 

N/A
N/A

PRTF Distance 
 

N/A
N/A

Openness 
 

2.7
3.6

Acoustic Space Excitation 
 

0.7
0.9
Show Text 

Virtual Soundstage 
 

0.0

Virtual Soundstage  

Sennheiser IE 40 PRO Virtual Soundstage

Head Modeling 
 

No

Speaker Modeling 
 

No

Room Ambience 
 

No

Head Tracking 
 

No

Virtual Surround 
 

No App

Weighted Harmonic Distortion 
 

8.5
8.7

Weighted Harmonic Distortion  

See details on graph tool
See details on graph tool

WHD @ 90 
 

0.167
0.135

WHD @ 100 
 

0.056
0.046

Test Settings 
 

Firmware 
 

No Firmware

Power 
 

Passive

Connection 
 

Wired

Codec 
 

PCM, 24-bit, 48kHz

EQ 
 

No EQ

ANC 
 

No ANC

Tip/Pad 
 

Silicone (small)

Microphone 
 

No Microphone
Isolation

Noise Isolation 
 

7.3
6.4

Noise Isolation  

See details on graph tool
See details on graph tool

Isolation Audio 
 

Overall Attenuation 
 

-22.36 dB
-16.82 dB

Noise Cancelling  

No
No

Bass 
 

-6.39 dB
-2.43 dB

Mid 
 

-17.57 dB
-17.96 dB

Treble 
 

-43.99 dB
-31.63 dB
Show Text 

Leakage 
 

9.4
9.2

Leakage  

See details on graph tool
See details on graph tool

Leakage Audio 
 

Overall Leakage @ 1ft 
 

24.79 dB
26.01 dB
Show Text 
Microphone

Microphone Style 
 

Integrated 
 

No
No

In-Line 
 

Yes
No

Boom 
 

No
No

Detachable Boom 
 

N/A
No

Mic  

Yes
No
Show Text 

Recording Quality 
 

7.4
0.0

Microphone Frequency Response  

See details on graph tool
Sennheiser IE 40 PRO Microphone Frequency Response

Recorded Speech 
 

N/A

LFE 
 

479.46 Hz
N/A

FR Std. Dev. 
 

3.08 dB
N/A

HFE 
 

19,611.72 Hz
N/A

Weighted THD 
 

1.099
N/A

Gain 
 

22.57 dB
N/A
Show Text 

Noise Handling 
 

6.0
0.0

SpNR  

See details on graph tool
Sennheiser IE 40 PRO SpNR

Speech + Pink Noise  

N/A

Speech + Subway Noise  

N/A

SpNR 
 

12.23 dB
N/A
Show Text 
Active Features

Battery 
 

0.0
0.0

Battery Type 
 

N/A
No Battery

Continuous Battery Life 
 

N/A
N/A

Additional Charges 
 

N/A
N/A

Total Battery Life 
 

N/A
N/A

Charge Time 
 

N/A
N/A

Power-Saving Feature 
 

N/A
No

Audio While Charging 
 

N/A
No

Passive Playback 
 

N/A
Passive Headphone

Charging Port  

N/A
None
Show Text 

App Support 
 

0.0
0.0

App Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear App Picture
Sennheiser IE 40 PRO App Picture

App Name  

N/A
No App

iOS  

N/A
No

Android  

N/A
No

macOS  

N/A
No

Windows  

N/A
No

Equalizer 
 

N/A
No

ANC Control 
 

N/A
No

Mic Control  

N/A
No

Room Effects 
 

N/A
No

Playback Control 
 

N/A
No

Button Mapping  

N/A
No

Surround Sound  

N/A

Surround Support 
 

No
Show Text 
Connectivity

Bluetooth 
 

0.0
0.0

Bluetooth Version 
 

N/A
No Bluetooth

Multi-Device Pairing 
 

N/A
No

NFC Pairing 
 

N/A
No

Line Of Sight Range 
 

N/A
N/A

PC Latency (SBC) 
 

N/A
N/A

PC Latency (aptX) 
 

N/A
N/A

PC Latency (aptX HD) 
 

N/A

PC Latency (aptX-LL) 
 

N/A
N/A

iOS Latency 
 

N/A

Android Latency 
 

N/A
Show Text 

Non-Bluetooth Wireless 
 

0.0
0.0

Non-BT Line Of Sight Range 
 

N/A
N/A

Non-BT Latency 
 

N/A
N/A

Wired 
 

9.0
9.5

Cable Picture  

Sennheiser HD1 In-Ear / Momentum In-Ear Cable Picture
Sennheiser IE 40 PRO Cable Picture

Analog Audio 
 

Yes
Yes

USB Audio 
 

No
No

Detachable  

No
Yes

Length  

4.6 ft
4.3 ft

Connection  

1/8" TRRS
1/8" TRS

Wired Latency 
 

0 ms

Analog/USB Audio Latency 
 

0 ms
Show Text 

PC / PS4 Compatibility 
 

PC/PS4 Analog 
 

Audio + Microphone
Audio Only

PC/PS4 Wired USB 
 

No
No

PC/PS4 Non-BT Wireless 
 

No
No

Xbox One Compatibility 
 

Xbox One Analog 
 

Audio Only
Audio Only

Xbox One Wired USB 
 

No
No

Xbox One Non-BT Wireless 
 

No
No

Base/Dock 
 

0.0
0.0

Type 
 

N/A
No Base/Dock

USB Input 
 

N/A
No

Line In 
 

N/A
No

Line Out 
 

N/A
No

Optical Input 
 

N/A
No

RCA Input 
 

N/A
No

Dock Charging 
 

N/A
No

Power Supply 
 

N/A
No Base/Dock
Show Text 

Check Price

Android, Black
Momentum In-Ear
Searching
Finding store
Android, Red
Momentum In-Ear
Searching
Finding store
iOS, Black
Momentum In-Ear
Searching
Finding store
 
iOS, Red
Momentum In-Ear
Searching
Finding store
 

Sennheiser HD1 In-Ear / Momentum In-Ear

Sennheiser IE 40 PRO

Comments

  1. Comparison

Sennheiser HD1 In-Ear / Momentum In-Ear vs Sennheiser IE 40 PRO: Main Discussion

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