Sony MDRPQ4/PNK Noise Cancelling, MDR-NC300D, MDR-NC500D, Design and Fit, AI NC Modes, 98.4%

Noise Cancelling

Sound Mode

Enables Movie/Bass/Normal mode

NC Optimise

Applies most accurate noise cancelling mode for current position

MDR-NC300D

World’s first Digital Noise Cancelling (DNC) in-ear headphones

• Eliminate up to 98.4%* ambient noise

• Large 16mm driver units reproduce ultra-high-fidelity sounds

• Special DNC software engine eradicates limitations imposed by conventional analogue noise cancelling technology

• Digital signal processing allows for the creation of special filter shapes that actively respond to ever-changing noise conditions

• Digital equaliser presents the original audio footprint in superb clarity

• Noise-detection microphone is integrated with the driver unit to achieve a more stable and wider-range cancelling performance

• 3 Artificial Intelligence (AI) modes, suitable for usage in airplanes, trains and indoor office in automatic mode

• 7 pairs of ear buds are supplied to fit different ear sizes

• Equipped with leather carrying case

* Cancellation ratio based on energy of sound under Sony’s measurement

Lightweight Materials

Housing/Hanger: Magnesium

Headband: 7075 Aluminium

Swivel Mechanism
Allows headphones	Monitor Function
to lay flat thereby
	Mutes direct audio source and accentuates

MDR-NC500D

World’s first Digital Noise Cancelling (DNC) overband headphones

• Eliminate up to 99%* ambient noise

• Large 40mm driver units reproduce ultra-high-fidelity sounds

Monitor	Hold/Power
Halts playback and makes ambient	Holds all buttons/
sound more audible	Turns on the controller

Volume (-/+)	Lock/Open
Increases/Decreases volume	Locks/Opens AA battery
	compartment

saving storage	audibility of ambient sound. Hear
space and
	announcements, conversations, etc. clearly.
enhancing
portability.	DNC LED Indicator
	Signals operation of Digital
	Noise Cancelling mode.

• Special DNC software engine eradicates limitations imposed by

conventional analogue noise cancelling technology

• Digital signal processing allows for the creation of special filter shapes that

actively respond to ever-changing noise conditions

• Digital equaliser presents the original audio footprint in superb clarity

• Noise-detection microphone is integrated with the driver unit to achieve a

more stable and wider-range cancelling performance

• 3 Artificial Intelligence (AI) modes suitable for usage in airplanes,

trains and indoor office in automatic or manual mode

• Lightweight with swivel mechanism for easy portability

• Equipped with leather carrying case

* Cancellation ratio based on energy of sound under Sony’s measurement.

Mode A	Mode B
Recommended for flight ambient noise.	Recommended for eliminating in-train
	ambient noise.

Design and Fit

Despite its large 16mm driver unit, the EX MONITOR Series is able to adopt a closed-type-in-ear design for a better fit and clearer sound. This was made possible through the use of magnesium which is about 30% thinner than conventional plastics.

Seven different silicon hybrid earbuds also serve to ensure a perfect match for almost all ear canal shapes.

Power Supply
Accepts direct power supply via
		Headphone Cord
supplied AC adaptor.
		Two detachable
Sound Insulating Material	AI NC Mode Function
		cords (0.5m, 1.5m)

AI NC Modes

MDR-NC500D’s AI NC function is available in both Auto (default) and Manual modes (Mode A, Mode B and Mode C).

Frequency

Mode C

Recommended for eliminating office ambient noise.

SS S MS M ML L LL

Blocks out ambient noise via		Activates inbuilt AI NC			are supplied for your
passive means.		function.
					convenience.
	Digital			Driver Unit
	Signal	High-speed
Processor A/D, D/A					Noise
Noise:	(DSP)	converter
Digital Noise
Cancelling Software			Digital to	99%
Engine adds
			analogue
cancelling signal.
+
Audio:
Digital equaliser		Analogue to digital			Ambient noise
enhances audio					eliminated1
		Audio in
				Noise-detection microphone
				(Located inside the headphones)

High Cancelling Performance

Noise cancelling ratio

Mode A

Recommended for flight ambient noise.

Noise cancelling ratio	Frequency
	Mode C
	Recommended for eliminating office
	ambient noise.
ratio	Frequency

High-speed A/D, D/A converter (Receives and digitises analogue ambient noise signals)

Digital equaliser

(Enhances audio)

Audio in

Digital Signal Processor (DSP)

(Digital Noise Cancelling software engine analyses digitised noise signals and generates cancelling signal)

Driver unit	Noise-detection
(Reproduces noise	microphone
cancelling signal while	(Detects and passes along
delivering enhanced audio)	analogue ambient
	noise signals)

98.4%*

Ambient noise

eliminated

* Cancellation ratio based on energy of sound under Sony’s measurement

The noise-detection microphone is integrated with the driver unit to minimise the delay in its receipt of input from the driver unit to achieve a more stable and wider range cancelling performance.

1Ambient noise at 160Hz

Noise cancelling

Mode B

Recommended for eliminating in-train ambient noise.

High Cancelling Performance

The noise-detection microphone is integrated with the driver unit to minimise the delay for its receipt of input from the driver unit to achieve a more stable and wider range cancelling performance.

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