Nikko NP-390 turntable

NP-390 Auto-Return Turntable features:

Belt-drive platter drive mechanism for silent operation

4-pole synchronous motor for smooth, uniform torque

Large 30 cm (12-inch) die-cast aluminum platter

Statically-balanced tonearm

Operation convenience

 

The NP-390 provides excellent value for your investment, and in its price range, feature-for-feature, it has little or no competition. Unit features automatic return, meaning as you move the tonearm to the adge of the platter, the platter begins to rotate; turntable then handles the rest, including the return of the arm at the end of play automatically. Silent operation is provided by the belt-drive platter drive mechanism.

Superlative performance is assured by a 4-pole synchronous motor, large die-cast aluminum platter, statically-balanced tonearm with direct readout tracking force control and anti-skate control. The result are audible: wow and flutter and signal-to-noise ratio.

 

Specifications

Type:  Auto-return, belt drive

Motor:  4-pole synchronous motor

Speeds:  33-1/3 and 45 rpm

Platter :  die-cast aluminum platter

Platter Diameter:  300 mm (12")

Wow and Flutter:  less than 0,08% (WRMS)

Signal-to-Noise Ratio:  45 dB

Tonearm:  Statically-balanced straight arm

Power Supply: AC 120 V, 220 - 240 V 50/60 Hz

Dimensions (W x H x D):  440 x 130 x  354 mm

Nikko NR-515 receiver

 

The Nikko NR-515 Stereo receiver delivers 18 watts per channel, minimum RMS per channel, both channels driven into 8 ohms from 20 Hz to 20 kHz with no more than 0,5% Total Harmonic Distortion. The reliable and accurate NR-515 is loaded with features that will provide a maximum of listening enjoyment, included are phase-lock-loop, FM multiplex circuitry, and a high performance IC in the AM section and phase linear ceramic filters provide low distortion, maximum stereo separation, low noise and extreme stability.

Other features include two-speaker switching, separate bass and treble controls, balance control, volume control, loudness, mono, and tape monitor switching. Additional features include 4-way function selector, a large oversized center tuning meter, and Nikko's own wxclusive circuit breakers.

The NR-515 is an able performer. FM sensitivity is a usable 2,2 µV, FM selectivity is 55 dB while image rejection is 55 dB. Stereo Separation is 40 dB (at 1khz). Am signal-to-noise and image rejection figures are both 45 dB. The NR-515 is built to rigid specifications and provides a maximum of sound for a reasonable price.

 

Specifications:

FM Tuner Section

Sensitivity (IHF) Stereo :  2,2 µV

Selectivity. Alt. Channel :  55 dB

Image Rejection:  55 dB

IF Rejection:  75 dB

Total Harmonic Distortion

Stereo  (65 dBf) :  0,6 %

Mono (65 dBf) :  0,3 %

Stereo Separation:  40 dB at 1 kHz

Capture Ratio:  2,0 dB

AM Tuner Section

Selectivity:  30 dB ( ±10 kHz)

Image Rejection:  45 dB

IF Rejection:  35 dB

Signal-to-Noise Ratio:  45 dB

Power Amp Section

Minimum Rated Power RMS:  18 watts per channel, both channels driven, into 8 Ω

Total Harmonic Distortion:  0,5 %

Frequency Response:  20 Hz - 20 kHz

Dimensions (W x H x D):  17-5/16" x 5-5/16" x 11-13/16"

Weight:  14,7 lbs

 

Nikko NR-315 receiver

The NR-315 AM/FM Stereo Receiver delivers 10 watts per channel, minimum RMS per channel, both channel driven into 8 ohms from 40 Hz to 20 kHz, with no more than 0,8% Total Harmonic Distortion. Although the smallest of the Nikko Audio receivers, this unit continues the Nikko Audio tradition of superb engineering and high quality. Included are the phase-lock-loop FM multiplex circuitry and high performance IC in the AM section for low noise, low distortion and maximum stereo separation. Phase linear ceramic filters are used throughout to reduce distortion.

Feaatures include single speaker output, separate bass and treble controls, balance control, volume control, loudness and tape monitor switching. Additional features include a 4-way function selector, large oversized center tuning meter, headphone jack, and Nikko's own exclusive circuit breakers for protection.

The Nikko Audio NR-315 is a big performer FM sensitivity is a usable 2,2 µV FM selectivity is 50 dB, while FM image rejection is an accurate 50 dB. 

Specifications:

FM Tuner Section

Sensitivity (IHF) Stereo :  2,2 µV

Selectivity. Alt. Channel :  50 dB

Image Rejection:  50 dB

IF Rejection:  70 dB

Total Harmonic Distortion

Stereo  (65 dBf) :  1,0 %

Mono (65 dBf) :  0,5%

Stereo Separation:  40 dB at 1 kHz

Capture Ratio:  3,0 dB

AM Tuner Section

Selectivity:  25 dB ( ±10 kHz)

Image Rejection:  45 dB

IF Rejection:  35 dB

Signal-to-Noise Ratio:  45 dB

Power Amp Section

Minimum Rated Power RMS:  10 watts per channel, both channels driven, into 8 Ω

Total Harmonic Distortion:  0,8 %

Frequency Response:  40 Hz - 20 kHz

Dimensions (W x H x D):  17-5/16" x 5-5/16" x 11-13/16"

Weight:  13 lbs

Nikko Alpha 130 power-amp

Nikko Power Amplifier 130

Specifications:

Continuous Power Output per Channel:

More than 100 watts  - 20 -20,000 Hz at 8 Ω

More than 100 watts - 20 - 20,000 Hz at 4 Ω

More than 120 watts - 1000 Hz at 8 Ω

More than 130 watts - 1000 Hz at 4 Ω

Total Harmonic Distortion :

Continuous Power Output  at 8 Ω :   no more than 0,01%

Continuous Power Output  at 4 Ω :  no more than 0,03%

1 Watt power Output (8 ohms):  no more than 0,01%

Intermodulation Distortion :

Continuous Power Output  at 8 Ω :  no more than 0,01%

1 Watt Power Output :  no more than 0,03%

IHF Power Bandwidth (8 ohms):  10 - 50,000 Hz

Damping Factor at 1000 Hz (8 ohms):  more than 50

Frequency Response (Normal Input 8 Ω)

At 1 Watt Power Output :  10 - 50,000 Hz  ±0,2 dB

Input Sensitivity for 120 watts Power Output

Main In :  1 V ±2 dB

Signal-to-Noise Ratio (IHF A network):

Main (Normal, Direct) :  better than 110 dB

Signal-to-Noise Ratio (DIN Filter):

Main IN (Normal, Direct) :  better than 90 dB

Channel Balance:  no more than 1 dB

Residual Hum and Noise, 8 Ω:  no more than 0,5 mV

Idling Current:  20 - 60 mA

Midpoint Voltage:  0 ±20 mV

Muting Delay Time:  3 - 7 seconds

Power Requirements:

W-type :  AC 120 V, 60 Hz

E-type :  AC 220 V, 50 Hz

B-type :  AC 240 V, 50 Hz

Power Consumption:  310 W (420 VA)

Dimensions (W x H x D):  482 x 138 x 344 mm (19" x 5-1/3" x 13-1/2")

Weight:  12 kg (26,5 lbs)

Nikko Alpha 220 power-amp

Nikko Audio's Alpha 220 is a 120 watts per channel power amplifier having a DC servo-feedback loop, non-switching output circuitry, and a high slew rate The unit's input circuitr uses dual field effect transistors (FEDs) for lowest noise and distortion; the remaining stages employ wideband bipolar transistors. The amplifier has a slew rate of 100 volts per microsecond and a rise time of one microsecond. Low frequency signals are monitored and corrected by a DC servo-feedback loop.

The output stage is operated in a continuous non-switching mode, using circuitry that tracks transistor bias in synchonization with the music signal, to avoid excessive heat generation and resultant cost associated with traditional Class A designs while nonethless offering the exceptional degree of sonic clarity and openness of Class A operation. Additional features include; protection circuits to prevent speaker damage even if the preamp has a DC offest signal; front panel headphone jack and speaker selector switches; indicator lamps that monitor power-on and protection-circuit status.

Specifications:

Continuous Power Output per Channel:

More than 120 watts  - 20 -20,000 Hz at 8 Ω

More than 130 watts - 20 - 20,000 Hz at 4 Ω

More than 120 watts - 1000 Hz at 8 Ω

More than 130 watts - 1000 Hz at 4 Ω

Total Harmonic Distortion :

Continuous Power Output  at 8 Ω :   no more than 0,008%

Continuous Power Output  at 4 Ω :  no more than 0,02%

1 Watt power Output (8 ohms):  no more than 0,02%

Intermodulation Distortion :

Continuous Power Output  at 8 Ω :  no more than 0,01%

1 Watt Power Output :  no more than 0,02%

IHF Power Bandwidth (8 ohms):  5 - 70,000 Hz

Damping Factor at 1000 Hz (8 ohms):  more than 60

Frequency Response (Normal Input 8 Ω)

At 1 Watt Power Output :  10 - 100,000 Hz +0, -1 dB

Input Sensitivity for 120 watts Power Output

Main In :  1 V ±2 dB

Signal-to-Noise Ratio (IHF A network):

Main (Normal, Direct) :  better than 105 dB

Signal-to-Noise Ratio (DIN Filter):

Main IN (Normal, Direct) :  better than 90 dB

Channel Balance:  no more than 1 dB

Residual Hum and Noise, 8 Ω:  no more than 0,5 mV

Idling Current:  40 - 120 mA

Midpoint Voltage:  0 ±20 mV

Muting Delay Time:  3 - 7 seconds

Power Requirements:

W-type :  AC 120 V, 60 Hz

E-type :  AC 220 V, 50 Hz

B-type :  AC 240 V, 50 Hz

Power Consumption:  480 W (620 VA)

Dimensions (W x H x D):  482 x 138 x 344 mm (19" x 5-1/3" x 13-1/2")

Weight:  13,5 kg (29,7 lbs)

Nikko NA-300 NA-400

 Nikko NA-400 in difference from NA-300 is equipped in addition a Power Level Indicator.  These LED's indicate the output power of the right and left channels in watts. The wattage indicated is equal to the value when 8 Ω speakers are connected to this unit.

Specifications

Power Amplifier Section

Continuous Power Output(Min. RMS power per channel into 8 Ω , 20 - 20,000 Hz at rated THD both channel driven):  30 + 30 W

Both Channel Driven (at 1 kHz, 1% THD, 4 Ω):  35 + 35 W

Intermodulation Distortion:  Nomore than 0,1%

Total harmonic Distortion (at rated power into 8 Ω):  0,1%

Power bandwidth, IHF:  15 Hz - 35 kHz

Damping Factor (at 8 Ω):  30

Preamplifier Section

Input Sensitivity?Impedance

Phono : 2,2 mV/47 k Ω

Aux : 150 mV/39 k Ω

Tuner : 150 mV/39 k Ω

Tape : 150 mV/39 k Ω

Phono Overload Level:  100 mV

Output Level/Impedance:  100 mV/2,2 k Ω

Frequency Response:

Phono (RIAA):  30 Hz to 15 kHz, ±0,5 dB

Aux, Tepe:  20 Hz to 20 kHz, ±1,0 dB

Tone Control:

Bass : ±10 dB at 70 Hz

Treble : ±10 dB at 10 kHz

Loudness Control (at -30 dB):  +10 dB at 70 Hz; +5 dB at 10 kHz

Signal-to-Noise Ratio, (IHF A Network)

Phono : 80 dB

Aux : 95 dB

Tuner : 95 dB

Tape : 95 dB

General

Power Requirement:  AC 220/240 V, 50/60 Hz

Power Consumption:  100 W

Dimensions (W x H x d):  440 x 96 x 285 mm

Weight: 5,8 kg (12,7 lbs) net