Integrated Amplifier Features:
Non-NFB (Non-Negative Feedback) Amplifier, Zero Dynamic Distortion (Patent Pending)
Super Equalizer; Super Wide RIAA Deviation 20 Hz - 100 kHz ±0,2 dB (Patent Pending)
High Power Direct-A Amplifier 80 W + 80 W
Real Drive Circuit: Significantly Reduces Distortion Under Real Operating Conditions - When Driving Speakers
Clean Simple Circuit Design Combined wirh High Quality Construction
Real-Time Tone Control
Dual Speakers Output Terminals (A or B, A+B)
Dual Input/Output Terminals for Interconnection with Two Tape Decks
A Defeatable Subsonic Filter (18 Hz, 6 dB/oct) Eliminates Unneeded Ultra Low Frequency Noise
Direct Coupling Switch Removes Tone Controls from The main Circuit
Mode Switch with Facilities for Stereo Reverse and Monaural Reproduction
Loudness Control Switch
High Speed Protection Circuity
Principle of the Non-Negative Feedback Amplifier
The fundamental block diagram is shown as under. At first, input signal e, and inversed output signal e, are mixed at the input of the direct DS. amplifier. Then, the distortion component d is extracted. This d is amplified by the direct DS. amplifier and is inversed and fed into the main amplifier A, with the original signal e, Thus distortion is finally reduced dramatically and static distortion is brought to zero.
Specifications
Power Amplifier Section
Circuit Type: All stage direct DC servo circuit
Rated Output Power (Both Channel Drive)
80 W + 80 W at 20 Hz to 20 kHz 8 0hm load (DIN, U.K. Europe, USA)
100 W + 100 W at 1 kHz , 4 Ω load (DIN, U.K. USA)
50 W + 50 W at 1 kHz, 4 Ω Load (IEC)
Total Harmonic Distortion :
0,008% (20 Hz - 20 kHz at -3 dB rated output 8 Ω Load)
0,02% (20 Hz - 20 kHz at rated output 8 Ω Load )
Intermodulation DIstortion : 0,002% below 7 kHz/ 60 Hz : 1/4 (at amplitude output equivalent to rated output)
Output Bandwidth: 5 Hz - 100 kHz (IHF T.H.D. 0,035%)
Transmission Characteristics: 1 Hz - 250 kHz =0 dB -3 dB (at 1 W output)
Input Sensitivity: 150 mV
Input Impedance: 47 k Ω
Output Impedance: 0,08 Ω (1 kHz)
Output Terminals:
Speaker A and B Load 4 - 16 Ω or A + B Load 8 - 16 Ω
Headphone/Stereo headphone
Equalizer Amplifier Section
Max. Output: 10 V (at 47 k Ω load)
Rated Output : 150 mV
Total Harmonic Wave Distortion : below 0,002% (at 1 kHz, 8 V output)
Input Sensitivity/Impedance
Phono MM : 2,5 mV/47 k Ω
Phono MC : 125 µV/100 Ω
Tuner : 150 mV/47 k Ω
Aux, Tape : 150 mV/47 k Ω
RIAA Deviation:
Phono MM : within ±0,2 dB (20 Hz - 100 kHz)
Phono MC : within ±0,2 dB (20 Hz - 100 kHz)
Overall Characteristics
Signal-to-Noise Ratio (IHF A network)
Phono MM : 88 dB (input terminals short-circuited for 2,5 mV input)
Phono MC : 72 dB (input terminals short-circuited for 250 mV input)
Tuner, Tape, Aux : 110 dB (input terminals short-circuited)
Tone Control Adjustable Range
Bass : ±8 dB at 100 Hz
Treble : ±8 dB at 10 kHz
Subsonics: 18 Hz at 6 dB/oct
Loudness
Low Frequency : +7 dB at 100 Hz
High Frequency : +6 dB at 10 kHz
AC Outlet: switched x 2 100W Total, unswitched x 1 250 W
Power Requirements: AC 120 V, 200 V, 220 V, 240 V 50/60 Hz
Power Consumption:230 W (USA); 400 W (IEC); 200 W (Hong Kong); 680 W Maximum Output
Dimensions (W x H x D): 434 x 132 x 407 mm
Weight: 12 kg
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