August 17, 2000

New commodity

*** <Sony> marketing puts "MD Walkman" two models that MD corresponded to stereo mode (MDLP) for a long time which can use existing MD media for twice and four times length on the market.
"Recording MD Walkman" 'MZ-R900' is a model by which the MDLP function is installed for the first time as portable MD recorder. 320 minutes or less can record for 80 existing minutes on the disk in the MDLP mode at time of the length of the stereo. Additionally, the longest recording and reproduction time in the world^*1 has been achieved. Moreover, "MD Walkman only for the reproduction" 'MZ-E900' is also possible the reproduction of the tune recorded in the MDLP mode corresponding to MDLP. Additionally, they are minimum in the world and lightest as portable MD. ^*2 sizes and the longest about 100 hours in the world^*3 continuous reproduction has been achieved.

Type name	Sale day	Price (excluding tax)	Color	First monthly production
Portable mini-disc recorder "Recording MD Walkman" �wMZ-R900�x	September 10	Open price	Silver and white Blue and red	50,000
Portable mini-disc player "MD Walkman" �wMZ-E900�x			Silver and blue	30,000

Notes:

*1	*** When you use one alkali AA dry battery as of August 16, 2000 of 'MZ-R900' together with the attached charge pond *** A longest in the world recording and the reproduction time are achieved as portable MD machine <again> when recording and reproducing in the LP4 mode.
*2	The minimum in the world and the lightness are achieved as 'MZ-E900' (machine only for the reproduction) portable MD reproduction machine as of August 16, 2000(volume of the main body).
*3	When one alkali AA dry battery as of August 16, 2000 of 'MZ-E900' (machine only for reproduction) is used together with attached charge pond When the tune recorded in the LP4 mode is reproduced, the longest in the world reproduction time is achieved as portable MD reproduction machine.

Two models of the sale are commodities that MD corresponded to stereo mode (MDLP) for a long time from which the spread will be expected in the future this time. The MDLP mode has adopted �gATRAC3" with the compression efficiency of about twice voice compression method �gATRAC" of past MD for the voice data compression method. *** In machine 'MZ-R900' can [it] record length in addition to a past standard stereo mode (LP2 stereo), and twice length record by four times (LP4 stereo). For instance, 320 minutes at most can be recorded for 160 minutes at most for 80-existing minute disk in the LP4 mode in the LP2 mode. In reproduction machine 'MZ-E900', the reproduction of the tune recorded in the MDLP mode in addition to the mode so far is also possible.
Moreover, the great, long battery making was achieved by newly developing adoption and main IC of newly developed low consumption electric power LSI compared with the conventional model kind. In addition, the frequency by which the disk was accessed decreased because (*S) was able to save the data for a long time at a time when the MDLP mode reproduced, and further energy-saving was enabled. *** Result machine 'MZ-R900' <again> : for the longest about 66 hours in the world as the machine <again> in the LP4 mode to the reproduction of the recorded disk. ^{- For a continuous reproduction and about 30 hours of one- A continuous recording of one} was achieved. In addition, as portable MD for the longest about 100 hours in the world in reproduction machine 'MZ-E900' when reproducing in the LP4 mode^{- A continuous reproduction of three} was achieved. Additionally, 'MZ-E900' is minimum in the world and lightest to adopt magnesium in an upper and lower cabinet. ^{- A compact body of two} has been achieved.
In addition, variegated "Customizing function" to which the usage of two model and MD Walkman extended further was reinforced. "Personal disk memory" by which setting of the tone quality when the disk was reproduced and the volume, etc. was able to be memorized and the reproduction speed were installed and "Digital Sound Preset" by which "Melody timer" by which riding past in "Speed control" which came to 80%-110% in changeability at intervals of 5% and the train was prevented and tone quality were able to be customized was installed. "New stick controller" which can be operated by blind touch is improved, and additionally, it is attached, and has improved operativeness greatly.

- Main feature of recording reproduction machine 'MZ-R900'

MD Long Play Stereo Recording and Playback Mode (MDLP) Adopted

When the disk is used for 80 existing minutes by adopting "ATRAC3" with the compression efficiency of about twice the voice compression method of past MD and "ATRAC" for the voice data compression codec, 320 minutes at most can be recorded the high pitched sound quality stereo and be reproduced for 160 minutes at most in the LP4 mode in the LP2 mode.

Of course, the recording and the reproduction in the standard stereo mode are also possible. Additionally, it is also possible that the track where the recording mode is different exists together on one disk.

It is not possible to reproduce - with the equipment of the tune etc. recorded in the MDLP mode of non-correspondence in the MDLP mode.

2. [It] records and [it] reproduces with portable MD recorder the longest in the world. ^{- Achievement of one} hour

32 bit RISC processor which newly built processing DSP of the signal of MD and a mass program into at this time and 16 Mbits DRAM were advanced, and thin system LSI of 0.18u accumulating process was developed, and energy-saving was advanced to one. Additionally, all main IC such as the laser coupler for an optical picking up, RF amplifiers, and power supplies was newly developed, and a thorough making an electric circuit a conserved electric power was measured. Moreover, by increasing the rotation speed of the disk to about three times; disc data reading time was reduced, reducing overall power consumption to the point that a single NiMH battery plus AA cell provides a world record breaking 66 hours of playback and 30 hours of recording in LP4 mode. In standard mode, 50 hours of playback and 19 hours of recording are possible. - For a continuous reproduction and about 30 hours of one^{- A continuous recording of one} was achieved.

Moreover, a standard mode achieved a continuous reproduction of about 53 hours and continuous recordings of about 19 hours.

- Comparison in standard stereo mode with our company "Recording MD Walkman" 'MZ-R90' 'MZ-R91'

	`MZ-R90/MZ-R91'		`MZ-R900'	Difference
Continuous reproduction time	~ 29 hours	�¨	~ 53 hours	(24 time increase and about 1.8 times)
Continuous recording time	~ 14.5 hours	�¨	~ 19 hours	(4.5 time increase and about 1.3 times)

3. "Double Jog Lever" adoption by which easy operation and easy edit are enabled

Convenient Jog Lever was installed in a right and left main body. Jog Lever was used properly by the purpose in concentrating the operation functions of the running systems of the reproduction and the stop, etc. right, and concentrating an edit and various set functions left, and a pleasant operation was achieved.

4. Other features

- Equipped with convenient "Name bank" function for edit

- Equipped with "Joint text" function which can be recorded while recording name of a song etc. of CD

CD text connection cable (RK-TXT1) and another sales digital cable of Walkman made by Sony CD and another sales of the joint text correspondence are necessary.

- Equipped with "Digital REC level control function" "Digital synchronized recording function" "Digital AGC function" "Date function"/"Monaural recording mode (160 minutes at most)"

- With built-in "Sampling rate converter"

*** Main feature of <-> machine 'MZ-E900' only for reproduction

*** For mode (MDLP) of stereo for a long time <1. MD>

The disk to which the stereo was recorded in the MDLP mode from which the spread will be expected in the future can be reproduced. Automatically, the track recorded in which mode of a standard stereo and monaural, LP2, and LP4 can reproduce all.

2. Minimum in the world and achievement of compact size of lightness about 58^g*2 by full magnesium body adoption

In the adoption of the high rigidity magnesium in an upper and lower cabinet, as portable MD, the minimum in the world, and lightness. ^{- A compact size of two} was achieved. Moreover, to make the best use of elegant material feeling of magnesium, finish of began cutting down was given on the surface. As a result, a suitable distinctive character for the high-end model was produced.

Size of main body:About 77.7�~12.7�~71.0mm (width �~ height �~ interior taking)- The maximum projection does not include it.
Main body mass:About 58g(Only the main body :).

3. In portable MD, for the longest about 100 hours in the world^{- Achievement of continuous reproduction time of three}

32 bit RISC processor with built-in processing DSP of the signal of MD and mass program and 16 Mbits DRAM were advanced, and thin system LSI of 0.18ƒÊm accumulating process was newly developed to one, and energy-saving was advanced. In addition, all main IC such as the laser coupler for an optical picking up, RF amplifiers, and power supplies was newly developed, and a thorough making an electric circuit a conserved electric power was measured. Moreover, the energy-saving of the control circuit was achieved as the reading time of data was shortened by increasing the rotation speed of the disk to about three times. As a result, a continuous reproduction of the longest about 100 hour in the world v was achieved for the LP4 mode as portable MD by the chewing gum type nickel hydrogen of the attachment and using together one Sony alkali AA dry battery. Moreover, a continuous reproduction of about 76 hours was achieved in a standard mode.

- Main feature common to two models

1. Equipped with convenient "Customizing function" to which usage of MD extends further

- Equipped with "Personal disk memory" function that setting when each disk is reproduced can be memorized in main body

Setting when tone quality and the volume etc. of each disk are variously reproduced can as many as be memorized up to 20 in the main body. The memorized content is read when being insert it next time when memorizing it in the main body when the disk is reproduced, and [it] reproduces by the same setting. (When the 21st piece is memorized, the registration of the disk where the time which reproduced most is old is automatically deleted)

Content (example) which can be remembered in unit

1.	Track playback program	:1 -> 3 -> 4 -> 2 -> 5
2.	Preset tone	:TREBLE:+3 BASS:0
3.	Play mode	:Repetition
4.	Reproduction speed	:95%
5.	Volume adjustment	:8

- Equipped with "Digital Sound Preset" function which can be customized to tone quality of my specification

The level of the high pitched sound (TREBLE treble) and the bass (BASS bass) can be selected respectively according to eight stages, and a fine sound creation by 64 kinds of is possible. In addition, because the tone quality of the favor is preset by two kinds, it is possible to enjoy it by the tone quality always customized to my specification.

- Equipped with "Speed control" function that reproduction speed can be set

The reproduction speed of seven stages can be set from 80 to 110% at intervals of 5%. It is possible to use it to change the tempo of the language study study and the tune. - The digital pitch control function does not attach.

- Equipped with "Melody timer" function to prevent riding past in train

The melody timer function for the alarm clock is installed. It is possible to set until 99 minutes at the time of each amount.

- Equipped with "Program reproduction" function that sets track playback order

*** 2. Attachment <new remote control "Stick controller" by which operativeness is pursued>

PLAY/FF¥FR and an easy operation such as doing STOP when pushing are achieved by turning the remote control head right and left. The volume adjustment is also possible by Pull Up (draw out) in addition the remote control head and the rotation. It is possible to operate it by blind touch without seeing remote control because the operation by the rotation. Remote control to which the backing light equipment is very easy-to-use because of a wide display of nine characters. *** It is <silver> attached. all models

3. Equipped with "one touch eject mechanism" that putting disk in and out is easy

4. Equipped with shock guard memory for long time of about longest 160 seconds

The length time of shock guard making was achieved by building 16 Mbits DRAM into the main body, and having installed the MDLP function newly, too. When the tune recorded in the LP4 mode is reproduced, the shockguard of about 40 seconds can be achieved, and the vibration for a long time be endured in the shockguard of about the longest 80 second and the standard in the shockguard of about the longest 160 second, LP2, and monaural.

Main specification of - 'MZ-R900' and 'MZ-E900'

	MZ-R900	MZ-E900
Form	Mini-disc digital audio system
Reproduction reading method	Non-contact optics reading (semiconductor laser use)
Number of channels	Stereo two channels/monaural one channel
Sampling rate	44.1kHz
Voice compression method	ATRAC(Adaptive TRansform Acoustic Coding) ATRAC3:LP2 stereo and LP4 stereo
Frequency characteristic	20�`20,000Hz�}3dB
(*waufurattah*)	Below measurement limit value
Input terminal	Microphone:Stereo mini-Jack Line input:Stereo mini-Jack Optical, digital input:Optical mini Jack - A line input and an optical, digital input are Jack of using combinedly.
Output terminal	Headphone (stereo mini-Jack) The maximum output level 5mW+5mW Line output (stereo mini-Jack) The headphone and the line output are Jack of using combinedly. (switch type in Jog Lever)	Headphone (stereo mini-Jack)
Externals size /maximum and externals sizes	The maximum projection does not include about 78.9 x ~17.1 x ~72.0mm. About 80.0 x ~20.5 x ~75.5mm (width x ~ height x ~ interior taking)	The maximum projection does not include about 77.7 x ~12.7 x ~71.0mm. About 79.5 x ~14.0 x ~72.0mm (width x ~ height x ~ interior taking)
Mass	About 110g(Only the main body :). /about 135g (contained charge pond)	About 58g(Only the main body :). /about 83g (contained charge pond)
Attached goods (commonness) (individual)	Headphone with liquid crystal remote control and rechargeable nickel hydrogen battery 'NH-14WM', Battery carrying case, dry battery case, and carrying pouch (each 1)
	AC power adaptor (1)	Charger (1)
Power supply (commonness) (individual)	One (optional) rechargeable nickel hydrogen battery 'NH-14WM' (attachment) and AA type dry battery
	AC power adaptor (attachment) AC100V 50/60Hz Car battery code DCC-E230 (optional)(optional) and external power supply Jack (ratings DC3V)	AC power adaptor (optional) AC-E15L AC100V50/60Hz (optional) Car battery code (optional) DCC-E215 (optional) and external power supply Jack (ratings DC1.5V) DC in jack is a dry battery. The case is equipped.
Charge time	~ 3.5 hours- When main body with AC power adaptor (attachment) is charged	~ 1.5 hours- When charger (attachment) is used

Battery duration of 'MZ-R900' recorder

([It] reproduces/record)	(1) Chewing gum type nickel Hydrogen charge pond	(2) Sony alkali AA dry battery (1)	(3) At using together
Standard mode	~ 21 hours/~ 8 hours	~ 30 hours/~ 7 hours	~ 53 hours/~ 19 hours
LP2 mode	~ 23 hours/~ 10.5 hours	~ 35 hours/~ 10 hours	~ 60 hours/~ 26 hours
LP4 mode	~ 26 hours/~ 13 hours	~ 38 hours/~ 14 hours	~ 66 hours/~ 30 hours

Battery duration of 'MZ-E900' player

(Reproduce)	(1) Chewing gum type nickel Hydrogen charge pond	(2) Sony alkali AA dry battery (1)	(3) At using together
Standard mode	~ 29 hours	~ 42 hours	~ 76 hours
LP2 mode	~ 33 hours	~ 49 hours	~ 87 hours
LP4 mode	~ 37 hours	~ 58 hours	~ 100 hours

MZ-R900 color variation

MZ-E900 color variation

- Inquiry of customer:

*** <Sony marketing (Inc.)customer center TEL0570-00-3311 consultation (Nabis dial)> 03-5448-3311(For a portable telephone and PHS).