Specifications

Maximum recording time (Approx.)
Sampling frequency

ATRAC3, ATRAC3plus, MP3: 44.1 kHz

Audio compression technology
NW-E303

ATRAC3plus

1 hr. 40 min. (320 kbps)

2 hr. 10 min. (256 kbps)

2 hr. 50 min. (192 kbps)

3 hr. 30 min. (160 kbps)

4 hr. 20 min. (128 kbps)

5 hr. 50 min. (96 kbps)

8 hr. 40 min. (64 kbps)

11 hr. 40 min. (48 kbps)

NW-E305/NW-E205

ATRAC3plus

3 hr. 30 min. (320 kbps)

4 hr. 20 min. (256 kbps)

5 hr. 50 min. (192 kbps)

7 hr. 00 min. (160 kbps)

8 hr. 50 min. (128 kbps)

11 hr. 40 min. (96 kbps)

17 hr. 30 min. (64 kbps)

23 hr. 30 min. (48 kbps)

NW-E307/NW-E207

ATRAC3plus

7 hr. 00 min. (320 kbps)

8 hr. 50 min. (256 kbps)

11 hr. 40 min. (192 kbps)

14 hr. 00 min. (160 kbps)

17 hr. 40 min. (128 kbps)

23 hr. 30 min. (96 kbps)

35 hr. 00 min. (64 kbps)

47 hr. 00 min. (48 kbps)

ATRAC3

4 hr. 10 min. (132 kbps)

MP3

2 hr. 10 min. (256 kbps)

4 hr. 20 min. (128 kbps)

ATRAC3

8 hr. 30 min. (132 kbps)

MP3

4 hr. 20 min. (256 kbps)

8 hr. 50 min. (128 kbps)

ATRAC3

17 hr. 00 min. (132 kbps)

MP3

8 hr. 50 min. (256 kbps)

17 hr. 40 min. (128 kbps)

Adaptive Transform Acoustic Coding3 (ATRAC3) Adaptive Transform Acoustic Coding3plus (ATRAC3plus)

MPEG1 Audio Layer-3 (MP3): 32 to 320 kbps, variable bit rate-compliant

Frequency response

20 to 20,000 Hz (single signal measurement)

FM Frequency range (NW-E303/E305/E307 only)

Overseas model: 76.0 to 108.0 MHz

Other models: 87.5 to 108.0 MHz

IF (FM) (NW-E303/E305/E307 only)

225 kHz

Antenna(NW-E303/E305/E307only)

Headphone cord antenna

Interface

Headphone: Stereo mini

USB

Signal-to-noise ratio (S/N)

80 dB or more (excluding ATRAC3 132 kbps)

Dynamic range

85 dB or more (excluding ATRAC3 132 kbps)

Operating temperature

5˚C to 35˚C (67˚F to 95˚F)

Power source

•Built-in rechargeable lithium-ion battery

•USB power (from a computer through the USB A plug)

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