Sony NW-WM1Z Premium Walkman® Owner's Manual

Audio

Audio Power 
Output

Stereo mini-jack : 60mW + 60mW(non CEW, High Gain) 
1.6~4.2mW (CEW)
Balanced standard-jack : 250mW + 250mW(non CEW, 
High Gain) 1.6~4.2mW (CEW)

Audio Format(s) 
Supported

MP3 (MPEG-1 Layer3): 32 to 320kbps (Supports variable 
bit rate (VBR)) at 32, 44.1 and 48 kHz 

WMA: ASF file format, 32-192 kbps (Supports variable bit 
rate (VBR)) at 44.1 kHz

FLAC: 16, 24 bit at  8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 
48, 88.2, 96, 176.4, 192 kHz, 352.8, 384 kHz

Linear PCM: Wave-Riff file format, wav file extension, 16, 
24, 32 (Float/Integer) at 8, 11.025, 12, 16, 22.05, 24, 32, 
44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz

AAC: MP4, mp4,.m4a,.3gp file extension, 16 to 320 kbps 
((Supports variable bit rate (VBR)) at 8, 11.025, 12, 16, 
22.05, 24, 32, 44.1, 48 kHz

HE-AAC: MP4, mp4,.m4a,.3gp file extension, 32 to 144 
kbps at 8, 11.025, 12, 16, 22.05, 24, 32, 44.1 and 48kHz

Apple Lossless: MP4, m4a, .mp4 file extension, 16 to 24 
bit at 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96, 
176.4, 192, 352.8, 384 kHz

AIFF: 16-24-32 bit at 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 
48, 88.2, 96, 176.4, 192, 352.8, 384 kHz

DSD: 1 bit at 2.8224 MHz, 5.6448, 11.2896 MHz

* 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.

Frequency 
Response

20 to 40,000 Hz (when playing data file, single signal 
measurement)

Audio Features

Play Mode

Normal / Repeat / Shuffle / Shuffle&Repeat / Repeat 1 
Song
Playback Range(All Range / Selected Range)

Bluetooth

Frequency Range

 2.4 GHz band (2.4000 GHz - 2.4835 GHz)

Modulation 
Method

 FHSS

Profile

A2DP

Yes

AVRCP

Yes

BT Spec.

Version

Version 4.2

Convenience Features

Multiple Language 
Display

German/ English/ Spanish/ French/ Italian/ Polish/ 
Portuguese/ Russian/ 
Turkish/ Japanese/ Korean/ Simplified Chinese/ 
Traditional Chinese

Display

Display 
Technology

TFT color display with white LED-backlight, Capacitive 
touch screen

Screen Size

4.0" (10.2 cm) / FWVGA (854 x 480 Pixels)

Hardware

Interface

Stereo mini-jack, Balanced standard-jack
Hi-Speed USB (USB 2.0 compliant)
WM-PORT (multiple connecting terminal): 22 pins

Memory

Memory Size

256 GB

User Memory 
Capacity 
(Approx.)

247,612,538,880 byte (230.60 GB)

Operating Conditions

Operating 
Temperature

41 'F to 95 'F (5 'C to 35 'C)

Power

Power Type

Built-in Rechargeable lithium-ion Battery
USB power (from a computer via a USB connector of 
the player)

Video

Video Format(s) 
Supported

AVC(H.264/AVC): MP4 file format, 20 Mbps bitrate, 30 
fps frame rate, 1920x1080 max

MPEG4: 20 Mbps bitrate, 30 fps frame rate, 1920x1080 
max

WMV9: ASF file format, 20 Mbps bitrate, 30 fps frame 
rate, 1920x1080 max

Weights and Measurements

Dimensions 
(Approx.)

2.58 x 4.86 x 0.79 inches (65.3 mm x 123.4 mm x 19.9 
mm) (w/h/d, projecting parts not included)
2.87 x 4.89 x 0.79 inches (72.9 mm x 124.2 mm x 19.9 mm)

Weight (Approx.)

16.1 oz (455 g)

Accessories

Timing jitter degrades the digital audio signal, creating an unevenness and introduces distortion into the sound. A large, 
low-phase noise oscillator precision clock provides a timing signal to all the parts of the digital audio system, so each 
process can be triggered at the right moment.