Sony Walkman NW-A55 Digital Hi-Res Music Player, 16GB

Connectivity

Terminals

Headphone: Stereo mini-jack, WM-PORT: WM-PORT (multiple connecting terminal): 22 pins, USB[2]: Hi-Speed USB (USB 2.0 compliant)

Wireless Capabilities

Communication system: Bluetooth Specification Version 4.2, NFC: Yes, Supported Bluetooth profiles: Yes, Supported Codecs (Transmission): Yes, Supported Codecs (Reception): Yes

Footnotes

Digital Noise Canceling

Digital Noise Cancelation Select NC Environment: Full-auto AINC, Bus/Train, Airplane, Office

USB DAC Mode

Supported

Headphone Out (Stereo mini-jack)

Frequency

20–40,000 Hz

Maximum Power Output (JEITA 16Ω/mW)

35 mW + 35 mW

Playback & display

Audio Playback

MP3 (.MP3): 32–320 kbps (Supports variable bitrate (VBR)) / 32, 44.1, 48 kHz, WMA (.WMA): 32–192 kbps (Supports variable bitrate (VBR)) / 44.1 kHz, FLAC (.flac): 16, 24 bit / 8–384 kHz, WAV (.WAV): 16, 24, 32 bit (Float / Integer) / 8–384 kHz, AAC (.mp4, .m4a, .3gp): 16–320 kbps / 8–48 kHz, HE-AAC (.mp4, .m4a, .3gp): 32–144 kbps / 8–48 kHz, Apple Lossless (.mp4, .m4a): 16, 24 bit / 8–384 kHz, AIFF (.aif, .aiff, .afc, .aifc): 16, 24, 32 bit / 8–384 kHz, DSD (.dsf, .dff): 1 bit / 2.8224, 5.6448, 11.2896 MHz *Audio that is converted to Linear PCM is output., APE (.ape): 8, 16, 24 bit / 8–192 kHz (Fast, Normal, High), MQA (.mqa.flac): Supported

Audio Playback Notes

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 2 GB) 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. For sampling frequency over 352.8 kHz, it will be down converted to a lower frequency for playback.

Display Resolution

3.1" (7.8 cm), WVGA (800 x 480 Pixels)

Display Type

TFT color display with white LED-backlight

Drag and Drop

Yes

FM Tuner

Yes

Music Play Mode

Shuffle Playback, Repeat Off, Repeat 1 Song, Repart All, All Range, Selected Range

Music Searching Methods

All Songs, Artist, Release　Year, Playlists, Album, Genre, Composer, Hi-Res, Recent Transfers, SensMe Channels, Folder

Sound Effects

6 Band equalizer, DSEE HX,DC Phase Linearizer, Dynamic Normalizer, VPT, ClearAudio+, Clear Phase, Vinyl Processor

Power

Battery Life - Continuous Playback Music

MP3 (128 kbps) / Ambient Sound Mode ON: Approx. 30 hrs, MP3 (128 kbps) / Ambient Sound Mode OFF: Approx. 45 hrs, AAC (256 kbps) / Ambient Sound Mode ON: Approx. 27 hrs, AAC (256 kbps) / Ambient Sound Mode OFF: Approx. 39 hrs, FLAC (96 kHz / 24 bit) / Ambient Sound Mode ON: Approx. 27 hrs, FLAC (96 kHz / 24 bit) / Ambient Sound Mode OFF: Approx. 39 hrs, FLAC (192 kHz / 24 bit) / Ambient Sound Mode ON: Approx. 23 hrs, FLAC (192 kHz / 24 bit) / Ambient Sound Mode OFF: Approx. 30 hrs, DSD (2.8224 MHz / 1 bit) / Ambient Sound Mode ON: Approx. 20 hrs, DSD (2.8224 MHz / 1 bit) / Ambient Sound Mode OFF: Approx. 25 hrs, MP3 (128 kbps) / Noise Cancel ON: Approx. 37 hrs, MP3 (128 kbps) / Noise Cancel OFF: Approx. 45 hrs, AAC (256 kbps) / Noise Cancel ON: Approx. 33 hrs, AAC (256 kbps) / Noise Cancel OFF: Approx. 39 hrs, FLAC (96 kHz / 24 bit) / Noise Cancel ON: Approx. 32 hrs, FLAC (96 kHz / 24 bit) / Noise Cancel OFF: Approx. 39 hrs, FLAC (192 kHz / 24 bit) / Noise Cancel ON: Approx. 27 hrs, FLAC (192 kHz / 24 bit) / Noise Cancel OFF: Approx. 30 hrs, DSD (2.8224 MHz / 1 bit) / Noise Cancel ON: Approx. 22 hrs, DSD (2.8224 MHz / 1 bit) / Noise Cancel OFF: Approx. 25 hrs, MP3 (128 kbps) / SBC (Connection): Approx. 20 hrs, FLAC (96 kHz / 24 bit) / LDAC Connection Preferred (Auto): Approx. 13 hrs, SBC (Connection): Approx. 15 hrs, LDAC (Sound Quality): Approx. 12 hrs

Battery Life — Continuous Playback Music Notes

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 settings, 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.

Built-in battery

Built-in Rechargeable lithium-ion Battery

Charging Time (full charge)

Approx. 4 hrs

Charging and Power supply

USB power (from a computer via a USB)

Size & Weight

Dimensions (W x H x D)

Approx. 2.20 inches x 3.84 inches x 0.43 inches (55.7 mm x 97.3 mm x 10.8 mm)

Weight

Approx. 3.50 oz (99 g)

Software

Operating System

Sony original OS

Storage Media

Memory Size

16 GB, Micro SD Micro SDHC Micro SDXC