The amplifier is fully functional, great sound on both channels without noises and crackling, switches and potentiometers are all functional. The button for bass cal.freg does not stay pressed. Optically very well preserved with a few minor scratches, see pictures The Dual CV 1600 is a classic hi-fi integrated amplifier from the "International" series (produced circa 1977–1979), known for its solid performance and comprehensive features. In expert circles, it is considered one of the brand's most powerful models before the introduction of the CV 1700. Technical Performance & Sound According to the official service manual from dual.de, the unit significantly exceeds the hi-fi requirements of DIN 45 500. dual.de Output power: 2 x 80 watts RMS (into 4 ohms) or 2 x 60 watts RMS (into 8 ohms). Music power is 2 x 120 watts. Tone Control: A special feature is the separate bass and treble controls for each channel, achieved via high-quality rotary switches instead of simple potentiometers. Connections: The amplifier offers inputs for turntables (MM), radio, two tape recorders and a microphone, with adjustable sensitivity for many inputs.