TPT-3001A vs Sansui TU-X1
The TU-X1's signal-to-noise is 86 dB against the TPT-3001A's 92 dB, its thd 0.020% against 0.050%, its output voltage 0.7V RMS against 0.5V RMS, and its output impedance 4.7Ω against 100Ω.
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The Tandberg TPT-3001A is a high-performance analog FM tuner with electronic presets, produced by Tandberg in Norway in the early 1980s. It is dedicated to FM broadcast reception in the 87.5-108 MHz band and uses a traditional analogue dial scale combined with a digitally controlled memory system for storing up to 8 station presets. The tuner employs an 8-gang front-end and switchable IF bandwidths (wide/normal/narrow), giving very high selectivity and strong rejection of unwanted signals and images, with image rejection figures quoted around 135 dB in test reports. Signal-to-noise ratio is extremely high for an FM tuner of its era, with about 95 dB in mono and around 82-92 dB in stereo depending on signal level and measurement conditions. Total harmonic distortion is very low, with wide-band measurements around 0.03-0.04% in mono and stereo at 65 dBf, and overall figures remaining well below 0.1% in typical use. Frequency response is essentially flat from 30 Hz to 15 kHz. Stereo separation is excellent, commonly specified at 60-70 dB at 1 kHz. The rear panel provides both fixed and variable audio outputs, plus additional connections such as multipath and detector outputs on some versions. A three-position de-emphasis selector (25, 50, 75 µs) is accessible on the rear panel. FM antenna connection is via a 75-ohm IEC/coaxial input, and units were often supplied with a 75/300-ohm matching transformer. The tuner operates from AC mains at 115 or 230V (±10%), 50/60 Hz, with power consumption around 34W. The chassis is a robust metal case finished in brown, with front-panel signal-strength and tuning meters and a large analogue tuning scale, and the internal memory for the 8 presets is backed by a PCB-mounted NiCd battery. Dimensions are approximately 435mm (W) x 83mm (H) x 350mm (D) and weight is about 7 kg (approx. 15 lb). Contemporary and later reviews consistently rank the TPT-3001A among the finest analog FM tuners ever produced, noted for its exceptional musicality, very low noise, and outstanding RF performance.
Analog signal output specifications
Input and output connections
Size, weight, and appearance
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The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The TU-X1's signal-to-noise is 86 dB against the TPT-3001A's 92 dB, its thd 0.020% against 0.050%, its output voltage 0.7V RMS against 0.5V RMS, and its output impedance 4.7Ω against 100Ω.
The MD90T's high-frequency extension is 17 kHz against the TPT-3001A's 15 kHz, its signal-to-noise 80 dB against 92 dB, its low-frequency extension 15 Hz against 30 Hz, and its thd 0.100% against 0.050%.
The 600T's signal-to-noise is 82 dB against the TPT-3001A's 92 dB, its output voltage 0.8V RMS against 0.5V RMS, and its weight 11.5 kg (25 lbs) against 7 kg (15 lbs). Both share thd (0.050%).
The MD 90's signal-to-noise is 75 dB against the TPT-3001A's 92 dB, its thd 0.100% against 0.050%, its output voltage 2.2V RMS against 0.5V RMS, and its output impedance 600Ω against 100Ω.
Yamaha T-1000
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