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:

220–230 V AC, 50/60 Hz (European model) 120 V AC, 60 Hz (Canadian 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) (4 5/8 × 1 1/16 × 3 1/8 in.)

Mass

Approx. 220 g (7.1 oz) the recorder only Approx. 317 g (10.2 oz) 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) Carrying case (1) Dry battery case (1)

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Sony MZ-R30 operating instructions Specifications, System, General, 33-EN

MZ-R30 specifications

The Sony MZ-R30, released in the late 1990s, is a notable model in the MiniDisc player lineup, renowned for its compact design and advanced audio quality. This portable device signified a groundbreaking shift in digital audio, introduced during a period when CDs dominated the market. The MZ-R30's innovative technology and user-friendly features made it appealing to a wide range of music enthusiasts.

One of the standout features of the MZ-R30 is its ability to record and playback audio in high-quality MiniDisc format. This format allowed users to enjoy near-CD audio quality while providing the convenience of a small and lightweight disc. The device supports various recording modes, including LP2 and LP4, which enable users to record more tracks by reducing audio quality slightly, perfect for portable use.

The MZ-R30 employs ATRAC (Adaptive Transform Acoustic Coding) compression technology, which played a crucial role in achieving excellent sound quality while conserving storage space. This technology allows for efficient encoding of audio data, thus enabling longer playtime on each MiniDisc. The device can hold up to 80 minutes of high-quality audio, making it a popular choice for users who needed ample media storage for their extensive music collections.

Another significant aspect of the MZ-R30 is its compact and lightweight design. Weighing just about 200 grams and measuring a mere 13.2 mm in thickness, it is easy to carry for users on the go. The durable construction ensures that the device can withstand daily use, while the vibrant display provides essential information, including track number and elapsed time.

The MZ-R30 also features a variety of playback options, including different playback modes like shuffle and repeat. Users can create custom playlists, which adds to the convenience of accessing favorite tracks. The device's battery life is commendable, providing up to 20 hours of playback time, making it ideal for long trips or extended use away from power sources.

Furthermore, the MZ-R30 comes equipped with an optical digital output, allowing it to connect to other audio devices for high-quality digital sound transmission.

Overall, the Sony MZ-R30 MiniDisc player is a revered model, recognized for its audio quality, recording capabilities, and portability. Its combination of innovative technology and practicality makes it a cherished piece of audio history, appealing to both casual listeners and audiophiles alike.