HK 640
Stereo Integrated Amplifier (55 watts x 2)
Product Specifications
- Continuous Average Power (FTC) per Channel (stereo mode)
- 8 ohms... 55 watts @ <0.09% THD
- Continuous Average Power (FTC) per Channel (stereo mode)
- 4 ohms... 75 watts @ <0.3% THD
- Dynamic Power
- 8 ohms... 75 watts (IHF, 1kHz tone burst)
- Dynamic Power
- 4 ohms... 120 watts (IHF, 1kHz tone burst)
- Dynamic Power
- 2 ohms... 160 watts (IHF, 1kHz tone burst)
- High Instantaneous Current Capability (HCC)
- ± 45 Amps
- Power Bandwidth
- HALF POWER – <10Hz – 100kHz @ 8 ohms
- Frequency Response
- 0.5Hz – 100kHz (+0/-3dB @ 1 watt)
- Damping Factor
- 120
- Signal-to-Noise Ratio
- TUNER & CD – 99dB (ref rated power output, A-Wtd)
- Input Level/Impedance
- TUNER & CD – 135mV/22k ohms
- Tone Controls
- BASS – ±10dB @ 50Hz
- Tone Controls
- TREBLE – ±10dB @ 10kHz
- Power Supply
- AC 230V, 50/60Hz
- Power Consumption
- 230 watts
- Signal-to-Noise Ratio
- OPTIONAL PHONO MM – 80dB (ref rated power output, A-Wtd)
- Signal-to-Noise Ratio
- OPTIONAL PHONO MC – 75dB (ref rated power output, A-Wtd)
- Input Level/Impedance
- OPTIONAL PHONO MM -2.2mV/47k ohms, 125pf
- Input Level/Impedance
- OPTIONAL PHONO MC – 120uV/56ohms
- Phono Overload
- OPTIONAL PHONO MM – 100mV
- Phono Overload
- OPTIONAL PHONO MC – 5mV
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