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Specifications
System
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 780 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.)
Recording and playback time
Maximum 74 minutes (MDW-74, stereo
recording)
Maximum 148 minutes (MDW-74, monaural
recording)
Revolutions
400 rpm to 900 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
Frequency response
20 to 20,000 Hz ± 3 dB
Wow and Flutter
Below measurable limit
Inputs
Microphone: stereo mini-jack, 0.22 – 0.78 mV
Line in: stereo mini-jack, 69 – 194 mV
Optical (Digital) in: optical (digital) mini-jack
Outputs
Headphones: stereo mini-jack, maximum
output level 5 mW+ 5 mW, load impedance
16 ohm
Line out: stereo mini-jack, 194 mV, load
impedance 10 kilohm
General
Power requirements
Sony AC Power Adaptor (supplied)
connected at the DC IN 6 V jack:
120 V AC, 60 Hz (US model)
230–240 V AC, 50/60 Hz (UK model)
240 V AC, 50/60 Hz (Australia and New
Zealand model)
100-240 V AC, 50/60 Hz (Other models)
Lithium ion rechargeable battery LIP-12(H)
(supplied)
Two LR6 (size AA) alkaline batteries (not
supplied)
Battery operation time
See "Battery life" (page 25)
Dimensions
Approx. 116.5 × 26 × 78 mm (w/h/d)
× 1
× 3
5
1
1
(4
/
/
/
in.)
8
16
8
Mass
Approx. 220 g (7.1 oz) the recorder only
Approx. 364 g (11.7 oz) for US model, 317 g
(10.2 oz) for other models ; incl. a recordable
MD, headphones with a remote controller,
and LIP-12 lithium ion rechargeable battery
Supplied accessories
AC power adaptor (1)
Headphones with a remote controller (1)
LIP-12(H) lithium ion rechargeable battery
(1)
Ear pads (2)(Except for US model)
Carrying case (1)
Dry battery case (1)
33
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