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Pioneer A-40 amplifier


Non -Switching Stereo Amplifier
Continuous average power output of 70 watts per channel, min. at 8 ohms, from 20 Hz to 20 kHz with no more than 0,009% Total Harmonic Distortion
Non-Switching Power Amplifier
Eliminates switching distortion and drastically reduces all other types of distortion while reatining high efficiency.
Low-noise phono equalizer
Features an FET input to assure wider dynamic range and lower distotion from any record.
LED indicators
Include 7-segment power indicator for each channel and indicators for each input
Other features include:  Tape dubbing, A/B speaker drive, Loudnes contour control.

Specifications:
Continuous Power Output:
Continuous average power output of 70 watts per channel, 
(min. at 8 Ω, from 20 Hz to 20 kHz with no more than 0,009% T.H.D.)
Total Harmonic Distortion (20-20,000 Hz, 8 Ω):  0,009% (continuous rated power output)
Intermodulation Distortion (50 Hz :7,000 Hz =4;1; 8 Ω, from Aux):
Damping Factor (20 - 20,000 Hz, 8 Ω):  50
Input Sensitivity/Impedance:
Phono MM :  2,5 mV/50 k Ω
Tuner, Aux, Tape :  150 mV/50 k Ω
Phono Overload Level (1 kHz):  150 mV
Output level/Impedance:
Tape REC :  150 mV
Speaker :  A, B, A+B, OFF
Headphones :  Low Impedance
Frequency Response:
Phono (RIAA Equalization) :  20 - 20,000 Hz ±0,2 dB
Tuner, Aux, Tape Play :  10 - 70,000 Hz 0 dB -3 dB
Tone Controls
Bass :  ±10 dB at 100 Hz
Treble :  ±10 dB at 10 kHz
Loudness Contour (volume at -40 dB position):  +6 dB (100 Hz ), +3 dB (10 kHz)
Hum and Noise (IHF, A-network)
Phono Music :  86 dB
Tuner, Aux, Tape Play :  102 dB
Power Requirement:  120 V 60 Hz
Power Consumption:  190 W
Dimensions (W x H x D):  420 x 98 x 287 mm (16-9/16" x 3-7/8 " x 11-5/16")
Weight (net):  6,5 kg (14 lbs 5 oz)


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