What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

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.
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
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

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