All products featured are independently chosen by us. However, SoundGuys may receive a commission on orders placed through its retail links. See our ethics statement.

1 / 10

MASTER & DYNAMIC

MASTER & DYNAMIC MW09

Name: MASTER & DYNAMIC MW09
Brand: MASTER & DYNAMIC
SKU: B0CN9SZ7GN
Price: 349.00 USD

Wireless earbuds that are built to last.

Current price · Amazon US

$349

Check Price on Amazon

Price last checked 1d ago

Noise Isolation / ANC & sound

7/ 10

0.010.0

A 7 puts its noise isolation / ANC in the top quarter of wireless earbuds we've measured.

Measured on 133 of the 271 we've cataloged.

3.9/ 5

SoundMDAQS Overall

3.9

1.05.0

A 3.9 puts its audio quality in the bottom quarter of wireless earbuds we've measured.

Measured on 64 of the 271 we've cataloged.

Key specs

Battery Life Earbuds

16 hAbove average

16 h

3 h16 h

above average for wireless earbuds — based on 243 of 271 we've cataloged.

Battery Life With Case

48 hAbove average

48 h

7 h60 h

above average for wireless earbuds — based on 245 of 271 we've cataloged.

IP Rating

IP54/IPX4

IPX433%IP5516%IP5415%IPX512%

Based on 244 of 271 wireless earbuds we've cataloged.

Noise Cancellation Type

Adaptive

Active61%Passive14%None9%Adaptive8%

Adaptive appears on 8% of the 172 wireless earbuds we've cataloged (of 271).

Battery

Battery Life Earbuds: 16 h
Battery Life With Case: 48 h
Charging Method: USB-C + Wireless
Full Charge Minutes: 60 min
Battery Life Anc On: 12 h
Battery Life Wireless: 16 h
Fast Charging: Yes

Build

IP Rating: IP54/IPX4
Sweat Resistance: Yes
Water Resistance: Yes
Material Case: Aluminum, Kevlar
Material Chassis Primary: Aluminum, sapphire glass

Sound

Noise Cancellation Type: Adaptive
Ambient Mode: Adjustable level
Anc Modes: Max ANC, All-day ANC, Adaptive ANC, off
Driver Count: 1
Driver Size: 11 mm
Driver Type: Dynamic
Adaptive Anc: Yes

Connectivity

Bluetooth Version: 5.4
Bluetooth Codec: SBC, AAC, aptX Adaptive, aptX Lossless, LC3
Bluetooth Range: 30 m
Connection Type: Bluetooth
Multipoint Devices: 2 devices

Design

Earbud Form Factor: In-ear
Case Dimensions: 46×65×26 mm
Color Options: Black, blue, gold, green, gunmetal, silver
Ear Tip Material: Silicone, memory foam
Ear Tip Sizes Included: 5 silicone, 2 foam
Wearing Style: Deep insert
Weight Per Earbud: 8.1 g
Weight With Case: 51, 63 g

Features

Certified For: Universal
Companion App: IOS + Android
Control Type: Physical buttons
Eq Customization: Full parametric EQ
Auto Connect: Yes
Auto Pause: Yes
Fitness Tracking: No
Mono Mode: Yes
Voice Assistant Support: Siri, Google Assistant, Alexa

Microphone

Count: 6
Wind Noise Reduction: Yes
Noise Reduction Type: AI-powered
Type: Mic array

SoundGuys review

Read the full review ›

SOUNDGUYS rating

7.9/ 10

Recommended

Reviewed byChase BernathBrand & Partnerships ManagerReviewed January 2024

Noise cancelling8.3

Isolation7.0

Battery life8.6

Comfort & fit8.0

Connectivity9.0

Design9.0

The verdict

Exceptional battery life and premium materials mean the Master & Dynamic MW09 is built to last a long time. You have to pay a pretty penny for these earbuds, but you'll turn a few heads with the eye-catching design.

✓What we like

✓Premium design and build quality

✓Latest Bluetooth tech

✓Good comfort with a wide range of ear tip options

✓Best-in-class battery life and fast charging

✓Excellent at blocking out noise

✕What could be better

✕Default sound over-emphasizes bass

✕Heavier than most wireless earbuds

✕Price

Read the full SoundGuys review →

Lab data

How we test ›

Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.

Compare with

View

0 of 4 overlay slots used

MASTER & DYNAMIC MW09SoundGuys Headphone Preference Curve

Measured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.

Frequency response — measurement data

MASTER & DYNAMIC MW09: frequency response, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Response (dB)
20	9.9
25	9.8
32	9.4
40	8.7
50	7.7
63	6.5
80	5.1
100	3.5
125	1.8
160	2.8
200	1.9
250	1.0
315	-0.5
400	-1.8
500	-1.2
630	-0.7
800	-0.2
1000	0.0
1250	0.2
1600	-0.0
2000	0.3
2500	2.5
3150	6.5
4000	9.1
5000	8.0
6300	3.0
8000	2.5
10000	-2.4
12500	-8.3
16000	-17.1
20000	-31.0

MASTER & DYNAMIC MW09

Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.

Passive isolation — measurement data

MASTER & DYNAMIC MW09: passive isolation, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Attenuation (dB)
21	3.1
26	3.8
33	3.3
41	3.3
52	4.5
65	5.3
82	5.1
103	6.1
130	4.0
163	7.0
205	9.5
259	11.5
325	10.4
410	8.2
516	11.1
613	13.2
772	20.6
972	26.3
1220	30.1
1540	28.7
1940	23.3
2440	25.9
3070	23.9
3870	20.2
4870	25.8
6130	28.2
7720	25.9
9720	33.1
12200	41.7
15400	30.1
19400	34.9

MASTER & DYNAMIC MW09

Total attenuation (dB) with ANC on — passive isolation plus active noise cancelling. Higher on the chart means more attenuation.

Noise cancelling — measurement data

MASTER & DYNAMIC MW09: noise cancelling, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Total attenuation (dB)
21	-1.4
26	8.4
33	13.9
41	21.4
52	26.0
65	39.2
82	33.5
103	32.2
130	24.7
163	33.3
205	32.7
259	28.1
325	17.1
410	10.9
516	13.8
613	15.0
772	31.8
972	30.0
1220	24.8
1540	25.5
1940	22.4
2440	26.2
3070	24.5
3870	21.9
4870	30.6
6130	24.8
7720	24.5
9720	33.2
12200	42.9
15400	30.4
19400	33.4