Nakamichi MB-4s

Commentary

A CD changer equipped with MusicBank System in pursuit of cost performance.

While adopting the same mechanism as MB-3s, cost performance is improved by adjusting D/A conversion part and function.

The mechanism part uses a music bank mechanism, and 7 disc multi-play is possible with the same feeling as a single disc type CD player.
The MB-4s employs a second generation mechanism, which greatly reduces the number of mechanical parts to improve reliability and reduce costs. In addition, the second generation mechanism achieves a high speed of 2.1 seconds while the former mechanism takes as short as 3.7 seconds to change the disc. In addition, the MB-4s achieves a compact size of approximately 1/2 in volume.
The user interface has also been greatly improved, with seven direct disk access keys and a disk calendar, making it easy to call up, store, and check the CDs you want to play.

50-program disk / track memory, random play and repeat play are available.

Only disk number 1 supports 8 cm CD.

It is equipped with the Nakamichi system remote function, and the remote control unit attached to the Nakamichi stereo receiver or integrated amplifier enables system remote control of the connected MB-4s.

Equipped with a time display function capable of displaying track time and fixed total time.

The D/A converter is a 16-bit dual D/A converter and the digital filter is equipped with a 4 x oversampling digital filter.

Wireless remote control is included.

Model Rating

Type	CD Player
Reading system	Non-contact optical (semiconductor laser used)
Error correction method	CIRC method
Number of channels	2-channel stereo
D/A conversion method	16-bit Dual D/A converter 4 x oversampling digital filter
Sampling frequency	44.1kHz
Quantization	16-bit straight line
Disk rotational speed	Approx. 200 ~ 500 rpm (Constant Linear Velocity)
Wow and flutter	Below the measurement limit
Frequency characteristic	10 Hz to 20 kHz ± 0.5 dB
Total harmonic distortion factor	0.035% or Less (1 kHz)
Total harmonic distortion factor + noise	0.05%(1kHz)
Signal-to-noise ratio (IHF A-WTD)	87 dB or more
Dynamic range	87 dB or more
Channel separation	78 dB or more
Output Level / Impedance	2.0V/600 Ω (1 kHz, 0 dB)
Pwer	100 VAC, 50Hz/60Hz
Power consumption	10W max.
External dimensions	Width 428x Height 96x Depth 270 mm
Weight	Approx. 5.0 kg
Attachment : Remote Control Unit
Method	Infrared pulse system
Pwer	DC3V(1.5Vx2)
External dimensions	Width 58x Height 17x Depth 125 mm
Weight	Approx. 120g (Including Battery)