Sony NWA45 Walkman with Hi-Res Audio and Digital Noise-Cancelling

Model: NWA45/B UPC: 027242906266 Item: 2417


Color: Black - In Stock

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754 Route 309 (Bethlehem Pike) Montgomeryville, PA 18936
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Sony NWA45/B Walkman with Hi-Res Audio and Digital Noise-Cancelling Overview

Enjoy up to 45 hours of high-resolution audio in a handy portable music player with the Sony NWA45/B Walkman with Hi-Res Audio and Digital Noise-Cancelling. This Bluetooth music player provides high-resolution audio in maximum quality with the S-Master HX amplifier and Digital Sound Enhancement Engine (DSEE HX). Direct Stream Digital (DSD) audio format delivers natural sound and intense detail for studio-quality sound while you're on the move. You get listening flexibility with digital noise cancelling technology that blocks out external distractions, or ambient sound mode that lets external sound in if you want to hear the outside world. The portable mp3 player has USB DAC functionality so you can play great-sounding music from your computer, anywhere. For even greater convenience, Bluetooth technology allows you to connect seamlessly to Near Field Communication (NFC) devices for quick, contactless communication. The personal music player's large, full-color touch screen makes it easy to control your playlists, volume, and search functions.

Product Information

Hi-Res Audio in a Walkman

Enjoy superior sound quality, wrapped up in the colors of your world. High-Resolution Audio lets you hear music as the artist intended, while Digital Noise Cancelling ensures that you only hear what you want. Go wireless with NFC and Bluetooth streaming, and Ambient Sound Mode to keep you aware of your surroundings at all times.


  • Truly authentic sound with Hi-Res Audio
  • S-Master HX digital amplifier for pure sound quality
  • DSEE HX upscaling restores quality to compressed files
  • Easy Bluetooth connectivity with NFC one-touch
  • Digital Noise Cancelling and ambient sound mode
  • You can enjoy up to 45 hours of music play back 

High Resolution Audio for Uncompromised Sound

Enjoy the subtlest nuances in higher-than-CD quality Hi-Res Audio. Passion for music unites every component from signal to speaker, so it feels like the artist is performing right in front of you. 

S-Master HX Delivers Hi-Res Audio in Maximum Quality

Optimized for Hi-Res Audio, S-Master HX reduces distortion and noise, allowing you to enjoy all the subtleties in your music.

DSD Playback

Experience the natural sound and intense detail of DSD audio formats. This is the preferred recording format of many top producers and engineers, and you can enjoy it using the NW-A40 Series’ high-quality PCM conversion. 

DSEE HX Restores all Your Compressed Music Files

The Digital Sound Enhancement Engine HX (DSEE HX) upscales compressed digital music files (MP3, ACC, ATRAC and WMA) and takes them closer to the quality of Hi-Res Audio. By restoring the high-range sound lost in compression, DSEE HX produces your digital music files in rich, natural sound. 

New Soldering Maximizes Clarity

The precision-engineered components of the NW-A40 Series include high-quality, lead-free solder on the circuit board. This improved solder is also used on the S-Master HX chip, resulting in a more efficient electronic connection. So every time you press play, you can enjoy purer audio playback with enhanced vocal clarity. 

New Circuit Board for Pure, Solid Bass

The NW-A40 Series' circuit board has been optimized to improve electricity flow. The layout from the battery to the audio block minimizes the power loop, making the power supply stable. The result is clearer sound and pure, solid bass that comes through in every track. 

LDAC: for the Transmission of Hi-Res Audio Content

Enjoy your music at greater than CD quality with LDAC wireless audio transmission. LDAC uses a conventional BLUETOOTH connection, but transfers at a maximum data transfer rate up to 990kbps – approximately three times that of other audio profiles. The result is enhanced wireless listening that's much closer to the artist's intention. 

Digital Noise Cancelling for Fewer Distractions

When used with compatible IER-NW500N headphones, the NW-A40 Series' digital noise-cancelling reduces the ambient noise you would normally hear from your surroundings. Microphones built in to the headphones work with the digital noise cancelling engine to cut out unwanted sound.

Ambient Sound Mode Keeps You Aware

Listening to music but still want to hear the outside world? When you're using the compatible IER-NW500N headphones, select Ambient sound mode and the NW-A40 Series will let in external sounds to keep you aware of your surroundings.

Plays and Decodes MQA Music Files

The NW-A40 Series is fully compatible with MQA files, so you can play even more lossless-quality music. 

USB DAC Function Makes Music Played From Your Computer Sound Even Better

Use your NW-A40 Series as a USB DAC (Digital-Analogue Converter) by pairing it with a PC, Mac computer, or smartphone. When connected and activated using the supplied USB cable, the NW-A40 Series replaces your computer’s regular sound processing with its own, highly-tuned, hardware processing. Now, whether you’re at your home or office, in a coffee shop or commuting, you can always enjoy premium sound quality. 

Effortless Control with the Large Touch Screen

With the large, full-color touch screen, you're in complete control. Change tracks, create playlists and more, just by tapping the handy on-screen buttons. 

Listen for Longer with Up to 45 Hours' Battery Life

Perfect for commuting or when you want to enjoy your music all day, when fully charged you can enjoy up to 45 hours of music playback. 

Expand Your Memory with the SD Card Slot

Want to store even more music on your Walkman? Pop in an SD card (not supplied) for additional memory. 

NFC One-Touch for Instant Connectivity

Near Field Communication (NFC) and Bluetooth technology make connecting to your music fast and easy. Just touch your NFC-enabled device to your NW-A40 Series for a quick, seamless connection, then start streaming. 

Handy Buttons for Quick Control

The play/pause, music-selection and volume buttons on the side panel are shaped and positioned for easy operation. 

Product highlights

  • Easy-to-use 3.1" touch display with a resolution of 800 x 480 pixels 
  • 16 GB of memory lets you easily store thousands of songs; expandable with Micro SD card (sold separately)
  • Bluetooth with Near Field Communication (NFC) one-touch connection; LDAC function for enhanced wireless listening
  • USB 2.0 compliant with a 22 pin WM-Port to connect to most audio sources
  • USB DAC function pairs the digital music player with a PC or Mac computer for superior sound quality
  • Features high-resolution audio for exceptional listening quality
  • S-Master HX amplifier reduces distortion and noise for pure digital sound
  • Digital Noise Canceling technology reduces outside noise and distractions
  • Ambient Sound Mode lets in external noise to keep you aware of your surroundings
  • Up to 45 hours of playback from a single charge
  • Large, full-color touch screen
  • Dimensions: 2.21” W x 3.84” H x 0.43” D
  • Product weight: 3.5 oz. 
  • Warranty: 1 Year (World Wide Stereo is an authorized dealer for all brands we sell)
  • World Wide Stereo 60-day guarantee and product support




  • Audio power output: 35mW+35mW (Maximum power output (JEITA 16Ω/mW))
  • Antenna system: Headphone cord antenna
  • Audio format (s) supported: 
    MP3 (mp3.): 32 to 320kbps (Supports variable bit rate (VBR)) at 32, 44.1 and 48 kHz 
    WMA: 32-192 kbps (Supports variable bit rate (VBR)) at 44.1 kHz 
    FLAC: 16, 24 bit at 8 and 192 kHz 
    WAV ( .wav): 16, 24, 32bit(Float/Integer) at 8 and 192kHz 
    AAC ( .mp4, .m4a, .3gp): 6-320kbps at 8 and 48kHz 
    HE-AAC ( .mp4, .m4a, .3gp): 32-144kbps at 8 and 48kHz 
    Apple Lossless ( .mp4, .m4a): 16, 24bit at 8 and 192kHz 
    AIFF ( .aif, .aiff, .afc, .aifc): 16, 24, 32bit(Float/Integer) at 8 and 192kHz 
    DSD ( .dsf, .dff): 1bit at 2.8224, 5.6448, 11.2896 MHz *Audio that is converted to Linear PCM is output. 
    APE ( .ape): 8, 16, 24bit at 8 and 192kHz (Fast, Normal, High) 
    MQA ( .mqa.flac): Supported ?Sampling frequency may not correspond to all encoders. ?Copyright protected files cannot be played back. ?Non-standard bit rates or non-guaranteed bit rates are included depending on the Sampling frequency. ?Files that are 4 GB (APE is 2GB) or larger cannot be played back. ?This product recognizes audio sources exceeding CD quality (44.1 kHz/16 bit quantization) and DAT quality (48 kHz/16 bit quantization) as High-resolution Audio. The "HR" symbol is displayed for high-resolution audio sources.
  • Frequency response: 20,000Hz to 40,000Hz (when playing data file, single signal measurement)
  • Tuner frequency range: 87.5MHz to 108.0MHz

Audio Features

  • Play mode: Shuffle Playback / Repeat Off / Repeat 1 Song / Repart All Playback Range (All Range / Selected Range)
  • Sound modes: 6Band equalizer (Off / Rock / Pop / Jazz / Classic / EDM / R&B HIPHOP / Relax / Custom 1 / Custom 2)
  • Sound modes: DSEE HX (On / Off)
  • Sound modes: DC Phase Linearizer
  • Sound modes: VPT(Off / Studio / Club / Concert Hall / Matrix)
  • Sound modes: Dynamic Normalizer(On / Off)
  • Sound modes: ClearAudi+(On / Off)
  • Sound modes: Clear Phase(On / Off)


  • Bluetooth technology: Version 4.2
  • Frequency range: 2.4GHz band (2.4000GHz - 2.4835GHz)
  • Modulation method: FHSS

Convenience Features

  • Multiple language display: German / English / Spanish / French / Italian / Polish / Portuguese / Russian / Turkish / Japanese / Korean / Simplified Chinese / Traditional Chinese


  • Display technology: TFT color display with white LED-backlight, Capacitive touch screen
  • Screen size: 3.1 inch (7.8 cm)
  • Screen size: WVGA (800 x 480 Pixels)

FM Radio Feature

  • Antenna: Headphone cord antenna


  • Interface: Hi-Speed USB (USB 2.0 compliant) Stereo mini-jack WM-PORT (multiple connecting terminal):22 pins


  • External memory: microSD microSDHC microSDXC
  • Memory size: 16GB
  • User memory capacity (Approx.): Approx. 12.26 GB = 13,164,150,784 [byte] *Available capacity may vary. A portion of the memory is used for data management functions.


  • Type: Active type (for reader and writer)

Operating Conditions

  • Operating Temperature: 41 'F to 95 'F (5 'C to 35 'C)


  • Battery Charging (Approx): USB-based charging: 4 Hours
  • Battery Life (Approx): 
    MP3 @128 kbps = 45 Hrs.(Ambient Sound Mode OFF) , 30 Hrs. (Ambient Sound Mode ON), 37 Hrs. (Noise Cancel ON), 45 Hrs.(Noice Cancel OFF)
  • Battery Life (Approx): 
    AAC @256kbps = 39 Hrs.(Ambient Sound Mode OFF) , 27 Hrs. (Ambient Sound Mode ON), 33 Hrs. (Noise Cancel ON), 39 Hrs.(Noice Cancel OFF)
  • Battery Life (Approx): 
    FLAC @96 kHz/24 bit = 39 Hrs.(Ambient Sound Mode OFF) , 27 Hrs. (Ambient Sound Mode ON), 32 Hrs. (Noise Cancel ON), 39 Hrs.(Noice Cancel OFF)
  • Battery Life (Approx): 
    FLAC @192 kHz/24 bit = 30 Hrs.(Ambient Sound Mode OFF) , 23 Hrs. (Ambient Sound Mode ON), 27 Hrs. (Noise Cancel ON), 30 Hrs.(Noice Cancel OFF)
  • Battery Life (Approx): 
    DSD @ 2.8224MHz/1 bit = 25 Hrs.(Ambient Sound Mode OFF) , 20 Hrs. (Ambient Sound Mode ON), 22 Hrs. (Noise Cancel ON), 25 Hrs.(Noice Cancel OFF)
  • Battery Life (Approx): 
    Radio: = 32Hrs. (Noise Cancel OFF), 27 Hrs. (Noise Cancel ON)
  • Battery Life (Approx): 
    Direct REC: 8 hours (MP3 (128kbps))
  • Battery Life (Approx): 
    Bluetooth: = 20 Hrs. (SBC, Connection), 13 Hrs. (LDAC, Auto)
  • Battery Life (Approx): 
    *The values shown in this topic are the approximate battery life when content is played continuously at the default settings. Even if the player is turned off for an extended period, a small amount of battery power is still consumed.Battery life may vary depending on volume setting, conditions of use and ambient temperature.The battery is consumed considerably when the screen is on.The battery life may become about 70% shorter when some of the sound quality settings are active. A Bluetooth connection will shorten the battery life by up to 45% depending on the following conditions.Format of the content. Settings of the connected device.
  • Power Type: Built-in Rechargeable lithium-ion Battery USB power (from a computer via a USB connector of the player)

System Requirements

  • Operating system: Sony original OS

Weights and Measurements

  • Dimensions (Approx.): 2.16" x 3.84" x 0.43"
  • Weight (Approx.): 3.5 oz.

What's in the Box

What's in the Box:

  • NWA45/B Walkman
  • USB cable
  • Startup guide
  • Instruction manual



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Why did you choose this?
World Wide Stereo Store
Reynaldo M on Dec 25, 2018
Heard it had exceptional audio quality.
Elmin A on Apr 23, 2018
Reynaldo M on Dec 25, 2018
positive reviews
Thomas P on Dec 13, 2018
Heard it had exceptional audio quality.
Elmin A on Apr 23, 2018
positive reviews
Thomas P on Dec 13, 2018
Can you play Spotify on this product?
Larry M on Nov 24, 2018
  Thanks for your inquiry! No, this is strictly a DAP, capable of playing files stored within its internal memory or on a microSD card. It does not have any streaming capability.
Does it support gapless playback?
A shopper on Oct 4, 2018
  To my knowledge, there is no option in the menu for gapless playback, however I found that the delay between tracks was barely noticeable, as if it was already gapless by default. Thank you!