Many amps can deliver pure sound. The Sansui AU-919 delivers pure music.
Today's audio engineering has reached the point where you can select among a number of affordable high-power amplifiers that have virtually no "total harmonic distortion." That's good. But THD measurements only indicate an amplifier's response to a pure, continuously repeating, steady-state test signal (below, left). They don't tell you how the amp responds to the never-repeating, rapidly-changing transient waveforms of real music (below, right). And only an amplifier designed to reproduce the demanding dynamics of music signals can satisfy the critical audiophile. An amp like the Sansui AU-919.
SINE WAVE DYNAMIC MUSIC SIGNALS
Because low THD without low TIM is like sound without music, the Sansui AU-919 is designed to respond well to both simple sine-wave test signals and also to handle the jagged, pulsive edges required for realistic reproduction of music-without imparting that harsh, metallic quality known as "transient intermodulation distortion" (TIM). The Sansui AU-919 sounds better than conventional amps because Sansui developed a Unique (patent pending) circuit that is capable of achieving both low THD and low TIM simultaneously.
Our DD/DC (Diamond Differential/DC) circuitry provides the extremely high drive current necessary to use proper amounts of negative feedback to reduce conventionally-measured THD (no more than 0.008%, 5Hz-20,000Hz into 8 ohms at 110 watts, min. RMS) without compromising our extraordinary 200V/µSec slew rate, ensuring vanishingly-low TIM, as well. The power amplifier frequency response extends from zero Hz to 500,000Hz.
Since ultimate tonal quality depends on more than the power amplifier alone, Sansui also uses its DD/DC* circuitry in the phono equalizer section where current demands are also particularly high-to prevent TIM. ICL (input capacitor-less) FET circuits are used throughout the AU-919, and a "jump switch" is provided that will let you run pure DC from the Aux. input to the output.
Visit your authorized Sansui dealer today, and he'll show you a lot more that the AU-919 has to offer Like twin-detector protection circuitry and our Penta-Power Supply system. Two-deck monitoring/recording/dubbing facilities. And a high-performance ICL/FET pre-preamp for moving-coil cartridges.
Then listen to the AU-919 with the most demanding music you can find. You'll hear the way the music should sound. Like music. Not just like sound.
The Diamond Differential/DC. Sansui's (potent pending) totally symmetrical double ended Circuitry with eight transistors, is named for its Diamond-shaped schematic representation.
SANSUI ELECTRONICS CORP. Lyndhurst, New Jersey 07071; Gardena, Ca. 90247 Sansui Electric Co., Ltd., Tokyo, Japan Sansui Audio Europe S.A., Antwerp, Belgium In Canada: Electronic Distributors 1 Sansui.
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