Nakamichi Amplifier 2 Harmonic Time Alignment, 1990, made in Japan

Link: hifiengine | audio-database | instruction/owners manual

Specifications
Form Integrated amplifier
Power amplifier:
Output power: 50W+50W (8 ohms, both channel drive, 20Hz - 20kHz, 0.1%THD)
Power bandwidth: 10Hz - 50kHz
Frequency characteristic: 5Hz-80kHz+0 -3 dB
S/N day (IHF A-WTD, input short-circuit): 105dB
THD: 0.1% or less (8 ohm, an Output power, 20Hz - 20kHz)
Maximum output electric current: 18A peek (per one side channel)
Preamplifier:
Input sensitivity/impedance:

- Phono man month: 2.5mV / 47kohm
- Phono MC: 0.125mV/100 ohms
- compact disk, Tuner, Tape, Aux:150mV /, 20kohm
THD (at the time of 1kHz, Rec out, and 1V output):

- Phono man month: 0.008% or less
- Phono MC: 0.01% or less
RIAA deflection: Phono man month/MC: 30Hz-20kHz ≥ 0.5dB 

S/N ratio (IHF A-WTD, speaker output):

- Phono MM:82dB
- Phono MC:70dB
Tone control Bass: ≥10dB (20Hz)
Treble: ≥10dB (20kHz)
Synthesis:
Supply voltage: AC100V, 50Hz/60Hz
Power consumption: A maximum of 370W
Power receptacle: Switched: Two lines, a maximum of 150W (total)
Dimensions (WxHxD): 430x125x360 mm
Weight: 12.5kg

Nakamichi 420 Stereo Power Amplifier, 1976-1980¿, made in Japan

Link: hifiengine | radiomuseum | service manual

Country:  Japan

Manufacturer / Brand:  Nakamichi Co.; Tokyo

Year: 1976-1980 ??

Category: Audio Amplifier or -mixer

Semiconductors (the count is only for transistors) Semiconductors present.

Main principle Audio-Amplification

Wave bands - without

Details Hi-Fi equipment

Power type and voltage Alternating Current supply (AC) / 50/60Hz; 100; 117; 220; 240 Volt

Loudspeaker - This model requires external speaker(s).

Power out 100 W (unknown quality)

Model: Power Amplifier 420 - Nakamichi Co.; Tokyo

Material Metal case

Shape Book-shelf unit.

Dimensions (WHD) 400 x 80 x 225 mm / 15.7 x 3.1 x 8.9 inch

Notes Nakamichi Stereo Power Amplifier Model 420.

• Power output:

- 25 Watts RMS per channel (16 Ohms, 5 - 20000Hz)

- 50 Watts RMS per channel (8 Ohms, 5 - 20000Hz)

- 60 Watts RMS per channel (4 Ohms, 5 - 20000Hz)

• IHF Power Bandwidth (both channels driven) 5 - 100000Hz
• Frequency response: 5Hz to 50kHz
• Total harmonic distortion: 0.02%
• Damping factor: 100
• Input sensitivity: 1V
• Signal to noise ratio: 110dB
• Power Consumption:
• max. 400VA(8Ohms)

Optional:

Nakamichi Bridging Adaptor Model BA-100.

Net weight (2.2 lb = 1 kg) 7 kg / 15 lb 6.7 oz (15.419 lb)

Nakamichi BX-100E Two Head Cassette Deck, 1984-87, made in Japan

Link: hifiengine | radiomuseum

Description
This model was developed on the basis of this companys extensive experience experience with high grade cassette decks.

While incorporating much of Nakamichis superior technology and following its sound policy, this basic model delivers high overall characteristics and represents an extraordinary value at a moderate price.

Specifications
Type: 2-head, single compact cassette deck
Track System: 4-track, 2-channel stereo
Tape Speed: 4.8 cm/s
Heads: 1 x record/playback, 1 x erase
Motor: 1 x reel, 1 x capstan
Tape Type: type I, CrO2, Metal
Noise Reduction: B
Frequency Response: 20Hz to 20kHz (Metal tape)
Signal to Noise Ratio: 62dB (dolby B)
Wow and Flutter: 0.06%
Total Harmonic Distortion: 1.0%
Input: 50mV (line)
Output: 0.5V (line)
Dimensions: 430 x 110 x 250mm
Weight: 5.5kg
Year: 1984

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