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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Sound
    1. Sound Profile
    2. Frequency Response Consistency
    3. Raw Frequency Response
    4. Bass Profile: Target Compliance
    5. Mid-Range Profile: Target Compliance
    6. Treble Profile: Target Compliance
    7. Peaks/Dips
    8. Stereo Mismatch
    9. Group Delay
    10. Cumulative Spectral Decay
    11. PRTF
    12. Harmonic Distortion
    13. Electrical Aspects
    14. Virtual Soundstage
    15. Test Settings
    16. Imaging
    17. Weighted Harmonic Distortion
  5. 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
  6. Isolation
    1. Noise Isolation - Full Range
    2. Noise Isolation - Common Scenarios
    3. Noise Isolation - Voice Handling
    4. ANC Wind Handling
    5. Leakage
  7. Microphone
    1. Microphone Style
    2. Recording Quality
    3. Noise Handling
  8. Active Features
    1. Battery
    2. App Support
  9. Connectivity
    1. Wired Connection
    2. Bluetooth Connection
    3. Wireless Connection (Dongle)
    4. PC Compatibility
    5. PlayStation Compatibility
    6. Xbox Compatibility
    7. Base/Dock
    8. PC / PS4 Compatibility
  10. Comments

NAD VISO HP50 vs HiFiMan Sundara 2020

Side-by-Side Comparison

Products

NAD VISO HP50
HiFiMan Sundara 2020

Tested using Methodology v1.3.1

Updated Dec 23, 2022 05:43 PM

SEE PRICE
Amazon.com

Tested using Methodology v2.0

Updated Apr 24, 2025 06:41 PM

SEE PRICE
Amazon.com
NAD VISO HP50 Picture
HiFiMan Sundara 2020 Picture
  1. Recommended in 3 articles:
  2. Music
  3. Critical Listening
  4. Open-Back

Variants

  • VISO HP50 (Black)
  • VISO HP50 (Red)
  • VISO HP50 (White)
  • Sundara 2020 (Black)

Our Verdict

NAD VISO HP50

HiFiMan Sundara 2020

Full comparison details regarding individual product score sets can be found in the section below

Check Price

Black
Sundara 2020
SEE PRICE
Amazon.com
 
Read more

Main Differences for
Neutral Sound

Threshold 

0.10

Neutral Sound 

7.6
No major differences between these headphones for neutral sound. See full list of tests below.

Full Comparison

Sound

Sound Profile 
 

Frequency Response  

See details on graph tool

Sound Profile  

See details on graph tool

Normalization Frequency 
 

650 Hz

Bass Amount 
 

Slightly Underemphasized (-3 dB)

Bass Amount 
 

-1.81 dB

Treble Amount 
 

-3.69 dB

Treble Amount 
 

Slightly Underemphasized (-2 dB)

Sound Signature 
 

Flat
Show Text 

Frequency Response Consistency 
 

5.7
7.9

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 
 

1.09 dB
0.88 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 Profile: Target Compliance 
 

8.5
8.0

Bass  

See details on graph tool

Bass Profile: Target Compliance  

See details on graph tool

RMS Deviation From Target 
 

2.08 dB
4.3 dB

Low-Frequency Extension 
 

10 Hz
22.68 Hz

Low Bass 
 

-0.81 dB
-6 dB

Mid Bass 
 

0.26 dB
-2.37 dB

High Bass 
 

3.56 dB
0.06 dB
Show Text 

Mid-Range Profile: Target Compliance 
 

8.2
9.0

Mid  

See details on graph tool

Mid-Range Profile: Target Compliance  

See details on graph tool

RMS Deviation From Target 
 

2.36 dB
1.4 dB

Low Mid 
 

3.1 dB
0.56 dB

Mid-Mid 
 

1.73 dB
0.04 dB

High Mid 
 

1.23 dB
-1.86 dB
Show Text 

Treble Profile: Target Compliance 
 

8.7
9.3

Treble Profile: Target Compliance  

See details on graph tool

Treble  

See details on graph tool

RMS Deviation From Target 
 

2.65 dB
2.19 dB

Low Treble 
 

-1.24 dB
-2.53 dB

Mid Treble 
 

-1.19 dB
-0.82 dB

High Treble 
 

-5.9 dB
-4.67 dB
Show Text 

Peaks/Dips 
 

8.3
7.9

Peaks/Dips Graph  

See details on graph tool

Peaks/Dips Graph 
 

See details on graph tool

Peaks 
 

1.08 dB
1.1 dB

Dips 
 

0.84 dB
1.85 dB
Show Text 

Stereo Mismatch 
 

8.0

Frequency Response Mismatch  

See details on graph tool

Phase Response Mismatch  

See details on graph tool

Weighted Amplitude Mismatch 
 

0.57
0.2 dB

Weighted Frequency Response Mismatch 
 

1.27
1.2 dB

Weighted Phase Mismatch 
 

6
2.1°
Show Text 

Group Delay 
 

6.8

Group Delay  

See details on graph tool

Weighted Group Delay 
 

1.2 ms
Show Text 

Cumulative Spectral Decay 
 

CSD  

HiFiMan Sundara 2020 CSD

PRTF 
 

6.1
7.2

PRTF  

See details on graph tool
See details on graph tool

PRTF Accuracy (RMS Deviation) 
 

4.06 dB
2.36 dB

PRTF Size (Avg.) 
 

3.89 dB
4.77 dB

PRTF Distance 
 

14.67 dB
9.84 dB

Openness 
 

5.4

Acoustic Space Excitation 
 

2.8
Show Text 

Harmonic Distortion 
 

9.5

Harmonics Levels  

See details on graph tool

THD Ratio  

See details on graph tool
See details on graph tool

WHD @ 94 dB SPL 
 

0.301
0.04%

WHD @ 104 dB SPL 
 

0.093
0.09%
Show Text 

Electrical Aspects 
 

Impedance  

See details on graph tool

Sensitivity @1kHz-1V 
 

105.0 dB SPL

Bluetooth Max SPL 
 

N/A
Show Text 

Virtual Soundstage 
 

0.0

Virtual Soundstage  

HiFiMan Sundara 2020 Virtual Soundstage

Head Modeling 
 

No

Speaker Modeling 
 

No

Room Ambience 
 

No

Head Tracking 
 

No

Virtual Surround 
 

No App

Test Settings 
 

Firmware 
 

No Firmware

Power 
 

Passive

Connection 
 

Wired

Codec 
 

PCM, 24-bit, 48kHz

Test Instrument  

Audio Precision APx517B

EQ 
 

No EQ

ANC 
 

No ANC

Tip/Pad 
 

Default

Microphone 
 

No Microphone
Show Text 

Imaging 
 

8.8

Group Delay  

See details on graph tool

Phase Response  

See details on graph tool

Weighted Group Delay 
 

0.19

Weighted Amplitude Mismatch 
 

0.57
0.2 dB

Weighted Frequency Mismatch 
 

1.27
1.2 dB

Weighted Phase Mismatch 
 

6
2.1°
Show Text 

Weighted Harmonic Distortion 
 

7.9

Weighted Harmonic Distortion  

See details on graph tool
See details on graph tool

WHD @ 90 
 

0.301
0.04%

WHD @ 100 
 

0.093
0.09%
Design

Style  

Design Picture 2  

NAD VISO HP50 Design Picture 2
HiFiMan Sundara 2020 Design Picture 2

Type  

Over-ear
Over-Ear

Enclosure  

Closed-Back
Open-Back

Wireless  

No
No

Transducer  

Dynamic
Planar Magnetic
Show Text 

Comfort 
 

6.5
8.0

Comfort Picture  

NAD VISO HP50 Comfort Picture
HiFiMan Sundara 2020 Comfort Picture

Weight  

0.6 lbs
0.87 lbs

Clamping Force 
 

1.4 lbs
1.6 lbs
Show Text 

Controls 
 

7.2
0.0

Controls Picture  

NAD VISO HP50 Controls Picture
HiFiMan Sundara 2020 Controls Picture

OS Compatibility 
 

iOS
No Controls

Ease Of Use  

Good
No Controls

Feedback  

Okay
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 
 

6.4

Breathability After Picture  

NAD VISO HP50 Breathability After Picture

Avg.Temp.Difference  

6.1 °C
Show Text 

Portability 
 

6.2
5.3

Portability Picture  

NAD VISO HP50 Portability Picture
HiFiMan Sundara 2020 Portability Picture

 

7.8"
8.3" (21.1 cm)

 

5"
5.8" (14.7 cm)

 

2.3"
4.6" (11.7 cm)

Volume  

86 in³
221.00 in³ (3,621.53 cm³)

Transmitter Required  

N/A
No
Show Text 

Case 
 

7.5
0.0

Case Picture  

NAD VISO HP50 Case Picture
HiFiMan Sundara 2020 Case Picture

Type  

Hard case
No case

 

8.1"
N/A

 

5.3"
N/A

 

2.5"
N/A

Volume  

107.3 in³
N/A
Show Text 

Build Quality 
 

7.0
7.5

Build Quality Picture  

NAD VISO HP50 Build Quality Picture
HiFiMan Sundara 2020 Build Quality Picture
Show Text 

Stability 
 

7.5
6.5

Stability Picture  

NAD VISO HP50 Stability Picture
HiFiMan Sundara 2020 Stability Picture
Show Text 

Headshots 1  

Angled Picture  

NAD VISO HP50 Angled Picture
HiFiMan Sundara 2020 Angled Picture

Side Picture  

NAD VISO HP50 Side Picture
HiFiMan Sundara 2020 Side Picture

Headshots 2  

Front Picture  

NAD VISO HP50 Front Picture
HiFiMan Sundara 2020 Front Picture

Rear Picture  

NAD VISO HP50 Rear Picture
HiFiMan Sundara 2020 Rear Picture

Top  

Top Picture  

NAD VISO HP50 Top Picture
HiFiMan Sundara 2020 Top Picture

In The Box  

In The Box Picture  

NAD VISO HP50 In The Box Picture
HiFiMan Sundara 2020 In The Box Picture
Show Text 
Isolation

Noise Isolation - Full Range 
 

4.4
0.6

Noise Isolation - Full Range Graph  

See details on graph tool
See details on graph tool

Noise Cancelling  

No
No

Overall Attenuation 
 

-11.96 dB
-1.46 dB

Isolation Audio 
 

Bass 
 

0.93 dB
1.05 dB

Mid 
 

-5.47 dB
-0.31 dB

Treble 
 

-31.66 dB
-5.78 dB
Show Text 

Noise Isolation - Common Scenarios 
 

0.7

Noise Isolation - Common Scenarios Graph  

See details on graph tool

Airplane Noise Attenuation 
 

-2.06 dB

Airplane Noise Isolation Audio 
 

Office Noise Attenuation 
 

-1.14 dB

Office Noise Isolation Audio 
 

Street Noise Attenuation 
 

-1.01 dB

Street Noise Isolation Audio 
 

Show Text 

Noise Isolation - Voice Handling 
 

Female Voice 1 
 

Male Voice 1 
 

Female Voice 2 
 

Male Voice 2 
 

ANC Wind Handling 
 

ANC Wind Handling Graph  

HiFiMan Sundara 2020 ANC Wind Handling Graph

ANC Wind Noise 
 

N/A

Leakage 
 

7.8
0.9

Leakage  

See details on graph tool
See details on graph tool

Leakage Audio 
 

Overall Leakage @ 1ft 
 

34.95 dB
66.5 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
HiFiMan Sundara 2020 Microphone Frequency Response

Recorded Speech 
 

N/A

LFE 
 

507.97 Hz
N/A

FR Std. Dev. 
 

3.79 dB
N/A

HFE 
 

16,491.42 Hz
N/A

Weighted THD 
 

0.582
N/A

Gain 
 

21.22 dB
N/A
Show Text 

Noise Handling 
 

6.4
0.0

SpNR  

See details on graph tool
HiFiMan Sundara 2020 SpNR

SpNR 
 

16.34 dB
N/A

Noise Gate 
 

No

Speech + Pink Noise Handling 
 

N/A

Speech + Pink Noise Audio Sample  

N/A

Speech + Subway Noise Handling 
 

N/A

Speech + Subway Noise Audio Sample  

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 
 

N/A
0.0

App Picture  

NAD VISO HP50 App Picture
HiFiMan Sundara 2020 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
Connectivity

Wired Connection 
 

9.5
9.9

Cable Picture  

NAD VISO HP50 Cable Picture
HiFiMan Sundara 2020 Cable Picture

Analog Audio 
 

Yes
Yes

USB Audio 
 

No
No

Detachable 
 

Yes
Yes

Length 
 

3.5 ft
4.80 ft (1.46 m)

Connector 
 

1/8" TRRS
1/8" TRS

Latency - Analog 
 

0.2 ms

Latency - USB 
 

N/A

Recorded Latency 
 

Recorded Latency Connection  

Analog

Wired Latency 
 

0 ms
Show Text 

Bluetooth Connection 
 

0.0
0.0

Bluetooth Version 
 

N/A
No Bluetooth

Multi-Device Pairing 
 

N/A
No

NFC Pairing 
 

N/A

Quick Pair (Android) 
 

No

Quick Pair (iOS) 
 

No

Line Of Sight Range 
 

N/A
N/A

Latency - SBC 
 

N/A
N/A

Latency - aptX 
 

N/A
N/A

Latency - aptX Adaptive (High Quality) 
 

N/A

Latency - aptX Adaptive (Low Latency) 
 

N/A

Latency - LDAC 
 

N/A

Recorded Latency 
 

N/A

Recorded Latency Codec  

No Bluetooth Audio

AAC Support 
 

No

aptX(LL) Latency 
 

N/A
Show Text 

Wireless Connection (Dongle) 
 

0.0
0.0

Line Of Sight Range 
 

N/A
N/A

Latency - Dongle 
 

N/A
N/A

Recorded Latency 
 

N/A

PC Compatibility 
 

Analog 
 

Audio Only

Wired USB 
 

No

Non-BT Wireless 
 

No
Show Text 

PlayStation Compatibility 
 

PS4 Analog 
 

Audio Only
Audio Only

PS4 Wired USB 
 

No
No

PS4 Non-BT Wireless 
 

No
No

PS5 Analog 
 

Audio Only

PS5 Wired USB 
 

No

PS5 Non-BT Wireless 
 

No
Show Text 

Xbox Compatibility 
 

Xbox One Analog 
 

Audio Only
Audio Only

Xbox One Wired USB 
 

No
No

Xbox One Non-BT Wireless 
 

No
No

Xbox Series X|S Analog 
 

Audio Only

Xbox Series X|S Wired USB 
 

No

Xbox Series X|S Non-BT Wireless 
 

No
Show Text 

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 

PC / PS4 Compatibility 
 

PC / PS4 Analog 
 

Audio Only
Audio Only

PC / PS4 Wired USB 
 

No
No

PC / PS4 Non-BT Wireless 
 

No
No

Check Price

Black
Sundara 2020
SEE PRICE
Amazon.com
 

NAD VISO HP50

HiFiMan Sundara 2020

Comments

  1. Comparison

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