Specifications

System

Audio playing system

MiniDisc digital audio system

Laser diode properties

Material: GaAlAs

Wavelength: λ = 790 nm

Emission duration: continuous

Laser output: less than 44.6 µW (This output is the value measured at a distance of 200 mm from the lens surface on the optical pick-up block with 7 mm aperture.)

Recording and playback time

Maximum 80 minutes (MDW-80, stereo recording)

Maximum 160 minutes (MDW-80, monaural recording)

Maximum 74 minutes (MDW-74, stereo recording)

Maximum 148 minutes (MDW-74, monaural recording)

Revolutions

400 rpm to 1,800 rpm (CLV)

Error correction

Advanced Cross Interleave Reed Solomon Code (ACIRC)

Sampling frequency

44.1 kHz

Sampling rate converter

Input: 32 kHz/44.1 kHz/48 kHz

Coding

Adaptive TRansform Acoustic Coding (ATRAC)

Modulation system

EFM (Eight to Fourteen

Modulation)

Number of channels

2 stereo channels

1 monaural channel

66-GB

Frequency response

20 to 20,000 Hz ± 3 dB

Wow and Flutter

Below measurable limit

Inputs

Microphone: stereo mini-jack, 0.35–1.38 mV

Line in: stereo mini-jack, 69–194 mV

Optical (Digital) in: optical (digital) mini-jack

Outputs

i1: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohm

i2: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohm

General

Power requirements

Sony AC Power Adaptor (supplied) connected at the DC IN 3 V jack:

120 V AC, 60 Hz (Canada model)

220–230 V AC, 50/60 Hz (European model)

100–240 V AC, 50/60 Hz (Other models)

Nickel cadmium rechargeable battery NC-WMAA (supplied) LR6 (size AA) alkaline battery (not supplied)

Battery operation time

See “Battery life” (page 53)

Dimensions

Approx. 81 ⋅ 74 ⋅ 26.2 mm (w/h/d) (31/4 ⋅ 3 ⋅ 11/16 in.) without projections.