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Sampling frequency
ATRAC3, ATRAC3plus, MP3: 44.1 kHz
Audio compression technology
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
Overseas model: 76.0 to 108.0 MHz
Other models: 87.5 to 108.0 MHz
IF (FM)
225 kHz
Antenna
Headphone cord antenna
Interface
Headphone: Stereo mini
USB
Signal-to-noise ratio (S/N)
80 dB or more (excluding ATRAC3 66 kbps)
Dynamic range
85 dB or more (excluding ATRAC3 66 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 supplied
USB cable)
Specifications
Maximum recording time (Approx.)
ATRAC3plus
2 hr. 10 min. (256 kbps)
8 hr. 40 min. (64 kbps)
11 hr. 40 min. (48 kbps)
ATRAC3
4 hr. 10 min. (132 kbps)
5 hr. 20 min. (105 kbps)
8 hr. 30 min. (66 kbps)
NW-E503
ATRAC3plus
4 hr. 20 min. (256 kbps)
17 hr. 30 min. (64 kbps)
23 hr. 30 min. (48 kbps)
ATRAC3
8 hr. 30 min. (132 kbps)
10 hr. 40 min. (105 kbps)
17 hr. 00 min. (66 kbps)
NW-E505
MP3
2 hr. 10 min. (256 kbps)
4 hr. 20 min. (128 kbps)
MP3
4 hr. 20 min. (256 kbps)
8 hr. 50 min. (128 kbps)
ATRAC3plus
8 hr. 50 min. (256 kbps)
35 hr. 00 min. (64 kbps)
47 hr. 00 min. (48 kbps)
ATRAC3
17 hr. 00 min. (132 kbps)
21 hr. 40 min. (105 kbps)
34 hr. 10 min. (66 kbps)
NW-E507
MP3
8 hr. 50 min. (256 kbps)
17 hr. 40 min. (128 kbps)