Nakamichi 480Z (1981)

A 2-head cassette deck from Nakamichi’s 400-series, released in 1981, featuring Dolby C noise reduction and precision tape transport.

Overview

The Nakamichi 480Z is a two-head stereo cassette deck introduced in 1981 as the second generation of the 480 series. Built by Nakamichi, it sits below the higher-end 481Z and 482Z models, which use a 3-head configuration. The 480Z supports Dolby B and C noise reduction, metal tape compatibility, and includes a bias fine adjustment mechanism for optimizing recording performance. It features a frequency-distributed double capstan transport system driven by a DC servo motor, designed for stable tape speed and low wow and flutter. The front panel includes a soft-touch logic control system and a wide-range LED peak level meter that displays levels from -40dB to +10dB across 16 segments.

Specifications

Type	Cassette deck Truck type 4-track, 2-channel stereo system
Heads	2 heads (1 erase, 1 record)
Motor (for tape drive)	For Capstan : 1 DC servo motor; For Reel : 1 DC Motor
Tape speed	4.8 cm / sec
Wow and flutter	0.06% or less Wrms; 0.11% or less Wpeak
Frequency characteristic	20 Hz to 20 kHz
Overall S/N ratio (70 μ s, ZX Tape)	Dolby B NR in : 62 dB or more (400 Hz, 3% THD, IHF-A wtd rms); Dolby C NR in : 68 dB or higher (400 Hz, 3% THD, IHF-A wtd rms)
Total Distortion Factor (400 Hz, 0 dB)	1.0% or Less (ZX Tape); 1.2% or Less (SX, EX II tape)
Erasure rate	60 dB or More (100 Hz, 0 dB)
Channel separation	36 dB or More (1 kHz, 0 dB)
Crosstalk	60 dB or More (1 kHz, 0 dB)
Bias frequency	105kHz
Input	50mV/30k Ω
Output (400 Hz, 0 dB)	Line : 600mV/2.2 Ω; Headphone : 10 mw (Phones Level : High) / 8 ohm
Voltage selector	can select either 120 V or 220-240 V
Power consumption	30W max.
External dimensions	Width 450x Height 135x Depth 289 mm
Weight	Approx. 6.4 kg

Design

The 480Z uses a 2-head configuration with an RP-9E SENDUST recording/reproducing head and an E-8L type double-gap erase head featuring ferrite and Sendust cores for high-frequency performance and magnetic efficiency. The chassis is resonance-damped, constructed from aluminum alloy with resin damping to absorb microvibrations. Tape transport relies on a frequency-distributed double capstan system driven by a DC servo motor for precise speed control. The control system uses C-MOS logic with soft-touch buttons and includes a tape start memory function and timer recording. A built-in MPX filter, bias oscillator circuit, and bias fine tuning mechanism (±10% adjustment range) support high-fidelity recording. The unit is available in black and silver finishes and includes a high-output headphone amplifier with a 2-level switch.

Product Family

The 480Z is part of Nakamichi’s 400-series cassette decks and is the second generation of the 480 line. Unlike the high-end 481Z and 482Z models, which use a 3-head configuration, the 480Z uses a 2-head design, making it a more accessible model within the series.

Market

The Nakamichi 480Z originally sold for ¥99,800 in Japan and $595 in the US in 1981. The optional RM-100 remote control unit was sold separately for ¥6,000. Common operational issues reported include failure of the auto-stop function and reverse transport (rewind), often attributed to age or prolonged disuse. Service manuals are available, and restoration kits are offered for refurbishment.