A402

A402

Stereo Integrated Amplifier (40 watts x 2)

Sold from 1977 until 1977

Successor Product: HK 505

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Product Specifications

MSRP U.S.
$374.95 each
Input Impedance
AUX – 33k ohms
Input Impedance
PHONO – 47k ohms
Input Impedance
TAPE MON – 33k ohms
Input Sensitivity
AUX – 125 millivolts
Input Sensitivity
PHONO – 2.2 millivolts
Input Sensitivity
TAPE MON – 125 millivolts
Signal-to-Noise Ratio
AUX – -77dB
Signal-to-Noise Ratio
PHONO – -69dB
Signal-to-Noise Ratio
TAPE MON – -77dB
Total Harmonic Distortion
AUX – 0.1%
Total Harmonic Distortion
PHONO – 0.5%
Total Harmonic Distortion
TAPE MONITOR – 0.1%
Output Level/Impedance
PHONO – <600 ohms
Phono Overload
90 millivolts
RIAA Equalization
±1.0dB (20Hz - 20kHz)
Filter
HIGHCUT – -3dB @ 3.5kHz, 6dB per octave slope
Filter
LOWCUT – -3dB @ 65Hz, 12dB per octave slope
Amplifier Power (RMS)
40 watts/channel @ 8 ohms (20Hz – 20kHz) with <0.1%THD
Power Bandwidth
<10Hz to 60kHz @ <0.1% THD into 8 ohms
Frequency Response
below 4Hz – 160kHz -3dB, below 4Hz – 100kHz -1dB
Rise Time
SQUARE WAVE – <3 microseconds
Rise Time
SQUARE WAVE – 1.5 microseconds
Square Wave Tilt
<5% @ 20Hz
Total Harmonic Distortion
<0.1% from 250 milliwatts to 40 watts RMS
Transient Intermodulation Distortion (TIM)
< 0.08% @ 40 watts, < 0.04% @ 1 watt
Hum and Noise
better than 100dB below 40 watts
Input Impedance
33k ohms
Damping Factor
>50 1kHz @ 1 watt

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