Solid State
Stereo Control Amplifier PRA-1001 (1978)
Pursuing the
fundamentals of control amplifiers, this product is a result of looking into
their functions, performance, design and other related problems. All the
functions are incorporated.
A 7
transistor equalizer amplifier with 2-stage differential amplifier, current
mirror circuit, last stage Class A pure complementary push-pull coupling.
Low
distortion tone control circuitry of the NF type by means of passing through a
complementary push-pull buffer with differential and inverted amplifier
circuits.
Unique low
distortion filter circuit capable of changing the cut-off frequency by change
over to an independent filter amplifier
Distinct
localization of the sound image with separation characteristics of 80 dB (20 Hz
- 20 kHz)
Specifications:
Type: all silicon transistor stereo control
amplifier
Input
Sensitivity/Impedance:
Phono 1
: 3,2 mV/50 k Ω
Phono 2
: 3,2 mV/30, 50, 100 k Ω
Max.
Allowable Input: 300 mV (1 kHz)
RIAA
Deviation: ±0,2 dB (20 Hz - 20 kHz)
Max.
Output/Rated Output: 10 V/1 V
Total
Harmonic Distortion: 0,003%
Frequency
Response: 10 Hz - 100 kHz (+0,1 -0,5 dB)
Signal-to-Noise
Ratio (IHF A network): better than 78 dB
Gain
Control: 0, -10, -20 dB
Filter: 10 Hz ; 40 Hz (18 dB/oct) 7 kHz
; 14 kHz (18 dB/oct)
Crosstalk: -80 dB (20 Hz - 1khz - 20 kHz)[Phono In -
output defeat]
Power :
Supply: AC 120 V 60 Hz; 220/240 V 50/60 Hz
Consumption: 18 W
Dimensions
(W x H x D): 410 x 152 x 271 mm
Weight: 8 kg
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