Sansui AU-11000

Integrated Stereo Amplifier (1975-77)

Wow In Really Nice Condition! We don't see very many of these in this condition. Original box, packing, and manual are not included. White background is a stock pix.

Made in Japan.

(from Wikipedia) The amplifier is known across the audiophile community for its high-output power and low Total harmonic distortion (THD).

The AU-11000 has an output power of 110 watts-per-channel, and was one of the earliest home audio amplifiers to use multiple transistors per channel using a "Push-Pull" method to add more amplification power. The AU-11000 uses independent circuitry in the amplification process, in such a way that, each individual channel has its own circuits. This means everything from the power supply to the bias control board all have 2 identical and independent circuits per channel to separate the 2 stereo channels. This also minimizes the Total Harmonic Distortion (THD) within the amplifier down to 0.08%.

The AU-11000 has its own power protection built into the amplifier. When the power switch is turned to the "ON" position, the power light comes on as green for a second, and turns red for a few seconds until the power protection circuitry has confirmed it is safe to power-up. Once it has finished, the power light turns and remains green until the amplifier is turned off. The AU-11000 also has its own block diagram printed on the upper-front casing. Sansui designed the AU-11000 with the input, output and speaker terminals on the sides of the unit. The rear of the unit has the power cord and outlets only.

The AU-11000 has features such as a logarithmic volume control, a 3-position level-set muting, a -20db mute switch, 3-position high & low filters, 3-Band Linear Bass/Midrange/Treble controls, 3 optional frequency settings for Bass & Treble controls, 3-position Tone Selection, A & B Speakers, Tape Input/Output control, 5-position mono-stereo selector switch, Tuner input, 2 Auxiliary inputs, 2 phono inputs, 2 rear 'always on' power outlets and 1 switched power outlet that is controlled by the units main power switch. There is an XLR input for Tape 2, and a spring-loaded ground connection plug.

Power output: 110 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 50kHz

Total harmonic distortion: 0.08%

Damping factor: 80

Input sensitivity: 2mV (MM), 130mV (DIN), 130mV (line)

Signal to noise ratio: 65dB (MM), 80dB (line)

Channel separation: 55dB (MM), 60dB (line)

Output: 130mV (line), 30mV (DIN), 0.7V (Pre out)

Speaker load impedance: 4Ω to 8Ω

Dimensions: 460 x 160 x 373mm

Weight: 19kg

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