The Sansui TU-3900 is a tuner model that was manufactured between 1976 and 1977 in Japan. It features a sleek black design and has a variety of technical specifications that cater to diverse listening needs. This model operates on VHF frequencies ranging from 88 to 108 MHz and AM frequencies from 535 to 1605 KHz, boasting an input sensitivity for stereo of just 2.0μV. The frequency response is quite broad, ranging from 30 Hz to 15 KHz, ensuring it can handle a wide spectrum of audio. In terms of distortion, it has a factor of 0.8% at 1 kHz, providing clean and clear sound reproduction. The signal-to-noise ratio stands at 60 dB, and it features channel separation of 40 dB, which contributes to a well-defined stereo image. For selectivity, it provides 60 dB and a common mode selection of 2.5 dB. Additionally, the TU-3900 has impressive suppression figures, such as IF suppression at 90 dB, image frequency rejection at 100 dB, and crosstalk attenuation at 34 dB at 1 kHz. Other notable features include a switch for FM Auto, FM Mono, AM, and an FM muting switch, which enhance its usability. The model lacks remote control capabilities and has dimensions of 400 x 120 x 240 mm (WxHxD), with a weight of 5 kg. The output voltage is adjustable between 0 - 1 V, with a recording output of 0.775 V. The original price was approximately 650 DM. It is often paired with various Sansui amplifiers such as the AU-2900, AU-3900, and others in its series.
