Technics SJ-MD150

Commentary

MD deck equipped with HDES.

It is equipped with HDES (High Density Encoding System), a newly developed proprietary audio compression technology.
This circuit realizes compression of high-quality music signals by assigning bits to the frequency band that is optimal for audibility, reducing preecho noise by dividing the time axis into optimal segments, and reducing quantization noise by using a new quantization method.

Equipped with a 24-bit ATRAC DSP, it operates on digital data with 24-bit high precision when compressing or expanding music data, improving the reproduction of sound details.

The D/A converter is equipped with a 20-bit D/A converter and the A/D converter is equipped with a 20-bit A/D converter.

A sampling rate converter is included to support various digital sources.

Equipped with an analog REC level control that adjusts the REC level for the analog input.

It is equipped with MD editing functions such as divide/combine/move/erase and MD title input function by jog dial.

Equipped with synchronized recording and timer rerecording functions.

Equipped with two optical input systems and one optical output system.

Wireless remote control is included.

Model Rating

Type	MD deck
Recording	Magnetic field modulation overwrite system
Read	Non-contact optical by semiconductor laser
Sampling frequency	44.1kHz
Compression / expansion system	ATRAC system
Frequency response (during playback)	5 Hz to 20 kHz ± 0.3 dB
Signal-to-noise ratio	99dB
Dynamic range	97dB
Wow and flutter	Below Measurement Limit (EIAJ)
Input Level / Impedance	Analog : 500mV/47k Ω
Digital input	Optical : 2 systems
Output Level / Impedance	Analog : 2.0V/600 Ω
Digital output	Optical : 1 system
Headphone out	15mW/32 Ω (Variable)
Pwer	100 VAC, 50Hz/60Hz
Power consumption	10W
External dimensions	Width 430x Height 103x Depth 300 mm
Weight	3.4kg
Attachment	Wireless Remote Control