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About the Citation 730 Twin Power
The Harman Kardon 730 Twin Power is a solid state AM/FM stereo receiver from circa 1976, featuring a unique dual mono power supply design with separate transformers and amplifier boards for each channel. It delivers 40 watts per channel into 8 ohms, with a frequency response from 4Hz to 130kHz and very low total harmonic distortion of 0.1%. The receiver is praised for its warm yet accurate sound, strong stereo imaging, and ability to drive 8-16 ohm speakers, including some 4-ohm models. It includes a phono stage and tuner, making it a versatile vintage unit. The 730 is regarded as superior in sound quality to many contemporary receivers of its era, with a damping factor of 30 and signal-to-noise ratios of 72dB (MM) and 77dB (line). It measures 432 x 368 x 140 mm and weighs 13.7 kg. Common upgrades include capacitor replacements and LED lighting retrofits to improve reliability and sound quality. The unit is no longer manufactured but remains highly regarded among vintage audio enthusiasts.
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