Vintage Sansui AU - 999 Integrated Stereo Amplifier / Amp / Rare / HIFI




Item History & Price

Information:
Reference Number: Avaluer:624641MPN: AU-999
Original Description:
VINTAGE SANSUI AU-999 INTEGRATED AMPLIFIERFULL WORKING CONDITION.
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For sale we have a lovely example of the Sansui AU-999.
The Sansui AU-999 is regarded as one of the finest integrated Sansui ever made. Period. Musical, beguiling, involving.. Beautiful black discretion hiding Sansui's big change from vacuum tubes to solid-state transistors and the beginning of Sansui's best and most successful period : the 1970s.
The AU-999 is the most advanced professional control amplifi...er ever manufactured by Sansui. Designed specifically for the ardent audiophile, it features the refined dull black panels common to all AU series professional control amplifiers from Sansui.
The pre-amplifier section is constructed of carefully selected low-noise PNP silicon transistors, while the power amplifier section features direct-coupled circuits specially developed with the improvement of tonal quality in mind.
Together, they permit the AU-999 to deliver a full 180 watts (4 ohms) in music power output with unprecedented tone quality. The AU-999 is lavishly endowed with accessory circuits.
These include a tone selector circuit, an improved form of the triple tone control circuit that offers a choice in selecting the critical frequencies of tone control; a speaker selector which permits connecting three sets of speaker systems; a balance check switch which simplifies the job of adjusting for optimum balance of the right and left channel sound volumes; facilities to connect two phonographs and two tape decks, and a tape reprint circuit.
Special provisions have also been made to permit the amplifier to be built up into an electronic crossover stereo system and permit comparing such a system with a standard stereo set-up. Sporting all the functions of a 'modern' amplifier, the AU-999 also called attention to circuit details that would become somewhat common only much later elsewhere.The build quality is like anything high-end having its roots in the 1960s : unbelievably clean with thick & chromed chassis separations and front (preamp) / back (inputs) covers.
Functions are numerous : triple tone controls (with intelligently placed turnover frequencies, for once), two-way dubbing & monitoring, level trim pots for the two phono MM and the auxiliary inputs, three pairs of loudspeaker terminals and even a "balance check" button that nulls signal if the two channels are properly balanced.
DIN tape connection is here as well, just as MIC input, stereo / reverse / mono-L / mono-R / L+R selector and even a -20dB muting switch to avoid using the volume which, then, still wasn't bigger than any other. Tone control is done in 2dB steps for bass and treble but in 1dB steps for the midrange - again a very useful attention.
Please read the audio-database write up here : http://audio-database.com/SANSUI/amp/au-999-e.html for more detailed information.
As for the way this thing sounds and looks : The AU-999 is beautiful, reliable, magnificently built and sounds warmly inviting. This amplifier is in nice condition but does have a few small blemishes around it that can easily be touched up. I can not stress enough how good this thing sounds.  Do not miss out on this gem. Prices are rising fast on vintage hi-fi and this is a sure investment.
Disclaimer : Payment to be within 24 hours of auction ending or it will be offered up to a second chance offer to the next highest bidder. Non-Paying winners will be reported and have a "non-payment case" opened against them and negative feedback left. Please only bid if you intend to complete the purchase - to which you will receive a fantastic service and glowing feedback :)
Please bid and buy with confidence. If you require any more photos or information, please do not hesitate to contact me.
Take a look at the stunning photos below to see this in all of its glory. Please also note that due to the black faceplate - the camera seems to have picked up a lot of dust so the item appears dirtier than what it is. Photos do not do this justice. Thank You.

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Specifications
Power output: 50 watts per channel into 8O (stereo)Frequency response: 20Hz to 70kHzTotal harmonic distortion: 0.4%Damping factor: 45Input sensitivity: 3mV (mic), 2mV (MM), 200mV (DIN), 200mV (line)Signal to noise ratio: 80dB (mic), 80dB (MM), 85dB (line)Output: 200mV (line), 30mV (DIN)Speaker load impedance: 4O to 16OSemiconductors: 41 x transistors, 16 x diodes, 2 x triacDimensions: 18-1/8 x 6-1/8 x 12-1/2 inchesWeight: 38.5lbs

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