Sansui AU-517 TU-517 - AMPLIFIER TUNER COMBO -recapped, 70's set

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For Sale: Tested and working classic Sansui integrated amplifier and matching analog tuner. Made in Japan late 1970's.

These are working 100% and have excellent sound quality. The amp was fully recapped sometime in or around 2016. No hum or distortion, excellent radio reception, excellent powerful sound quality. Both the signal strength and the tuning VU meters are working correctly. Both meter backlights are good and it appears all the tuner dial backlights are working as well. All dials appear to be working correctly with no scratchiness or static when adjusted.  Both sets of phono inputs as well as all the other inputs, outputs, and speaker outputs checked and are working correctly.

Both components are pretty clean and the faceplates are in near mint shape. The top case of the amp shows some wear as seen in photo, case on tuner in pretty nice shape.Minor issues: the "A" speaker terminals have minor issues with one terminal apparently missing a spring and the others are a little difficult to put the wire in. Still they work fine once speaker cables are in place. The "Auto" button on the tuner can be a little sticky and when switching to AM you sometimes have to kind of flick it to get AM to tune in. Lastly there is a small amount of dust behind the glass front of the tuner.

Video of the system being checked out here:

Manual, etc. for amp here:

Manual etc. for tuner here:

Specifications from the web:

The AU-517 with it's DC power amp boasts highly accurate reproduction of all signals (including any kind of musical signal), and it achieves exceptionally high circuit stability. The pre-driver circuitry is so effective in assuring stable performance in the face of temperature and voltage changes that Sansui has registered it with major patent offices around the world.

The subsonic filter attenuates harmful frequencies from 16Hz and below on a 6dB / octave slope, yet keeps musical content intact.

The potentiometer for master volume control is a precision attenuator type with 32 accurately calibrated steps marked in decibels (dB). By a simple calculation you know how much average power you are feeding your speakers.

The AU-517 has full monitoring/recording/dubbing facilities for two stereo tape decks. All play/copy operations can be handled by a trio of switches and a rotary knob, permitting a number of practical uses.

Power output: 65 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.025%

Damping factor: 60

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 78dB (MM), 100dB (line)

Channel separation: 60dB (MM), 65dB (line)

Output: 150mV (line), 1V (Pre out)

Speaker load impedance: 8Ω (minimum)

Dimensions: 430 x 168 x 389mm

Weight: 16.5kg

Year: 1978


The reception and the reproduction abilities of Sansui's prestigious TU-517 stereo FM/AM tuner are both strictly Hi-Fi.

It all begins in the precision FM front end, featuring a low-noise dual-gate MOS FET radio frequency amp and a newly-designed, precision frequency-linear, wide-gap 4-gang tuning capacitor.

The latter has more frequency stability and more accuracy for tuning-dial calibration. And overall, the TU-517 achieves an amazing sensitivity to incoming signals.

Objectifying this claim is easy. The TU-517's 50dB quieting sensitivity, for instance, is a high 34dBf (stereo). As you may know, this specification relates to the strength of the incoming signal required for the tuner to achieve a signal-to-noise ratio of 50dB or better. It is a truer measure of high fidelity quality than the old parameter. tied to an unsophisticated 30dB S/N. The 30dB S/N is hardly Hi-Fi. since it allows for as much as 3% distortion in the reproduced signal.

Helping to achieve the high 50dB quieting sensitivity of 34dBf, as explained above, are the ten differential amps formed of five ICs in the FM IF section of the TU-517. But the main advantage here is in superb selectivity. It's ability to receive only the station you want while rejecting all others. is a high 50dB. This is true even when the selectable IF bandwidth switch is turned to wide.

There are not a few tuners which have this ability to pick out a single station, even in the face of neighbouring stations of higher transmission power. But poor distortion performance usually accompanies this high selectivity. In the TU-517, neither reception nor reproduction quality is sacrificed.


Type: Stereo Tuner

Tuning Bands: FM, MW

Tuning Scale: Analogue

FM Tuning Range: 88 to 108 MHz

MW Tuning Range: 530 to 1600 kHz

Sensitivity: 1.7uV (FM), 220uV (MW)

Signal to Noise Ratio: 78dB (FM), 52dB (MW)

Distortion: 0.2% (FM), 0.35% (MW)

Selectivity: 80dB (FM), 35dB (MW)

Frequency response: 30Hz to 15kHz (FM)

Output: 1000mV

Dimensions: 430 x 168 x 402mm

Weight: 8.7kg

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Send your zip code for a shipping quote - should be between $26.99 and $52.99 if you are in continental USA. (July 2018).


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